Adjectives that Start with O (1200 O Adjectives in English) • 7ESL (2025)

Last updated on October 14, 2024 by Emma Grace

Contents

Discover a huge list of adjectives that start with O in English with meanings and examples. This reference will help you describe different things like personalities, behaviors, appearances, and qualities.

Learning these adjectives can expand your English vocabulary and improve your language skills. Dive into categories such as descriptive, positive, negative, and personality adjectives, along with images to aid your learning experience.

Adjectives that Start with O

Adjectives that Start with O (1200 O Adjectives in English) • 7ESL (1)

Descriptive Adjectives that Start with O

Below are 100 descriptive adjectives that start with O.

AdjectivesExamples
OakThe oak table was sturdy and durable.
OakenThe oaken door creaked as it opened.
ObligatedI am obligated to pay my taxes on time.
ObligingThe obliging neighbor offered to water the plants while we were away.
ObliqueThe oblique angle made it difficult to measure accurately.
ObliterableThe pencil markings on the paper were obliterable with an eraser.
ObliteratedThe town was obliterated by the tornado.
ObliviousThe driver was oblivious to the fact that he had run a red light.
OblongThe oblong table could seat eight people comfortably.
ObscureThe meaning of the obscure poem was hard to decipher.
ObservableThe observable changes in the weather indicated a storm was coming.
ObservantThe observant detective spotted a clue that led to the culprit.
ObstinateThe obstinate child refused to eat his vegetables.
ObstructedThe view of the stage was obstructed by a pillar.
ObstructiveThe obstructive tree branch needed to be pruned.
ObtainableThe obtainable prize was a weekend getaway to the beach.
ObtrusiveThe obtrusive salesman wouldn’t stop trying to sell us a timeshare.
ObtuseThe obtuse student struggled with math.
ObviousThe obvious solution to the problem was to increase funding.
OccasionalThe occasional rain showers kept the garden well-watered.
OccipitalThe occipital bone is located at the base of the skull.
OccludedThe occluded artery caused the heart attack.
OccupationalThe occupational therapist helped patients with their work-related injuries.
OccupiedThe occupied restroom had a sign that read “In Use.”
OceanicThe oceanic waves were so high, they could be seen from the shore.
OchreThe ochre rocks were a beautiful backdrop to the turquoise water.
OctangularThe octangular room was unique and modern.
OdiousThe odious smell coming from the dumpster made my stomach turn.
OdorlessThe odorless perfume was perfect for people with allergies.
OffThe clock was off by 10 minutes.
OffbeatThe offbeat rhythms of the music made it difficult to dance to.
OffensiveThe offensive comment made by the politician sparked a controversy.
OffhandThe offhand remark was not intended to be taken seriously.
OfficialThe official statement from the White House addressed the recent crisis.
OffshoreThe offshore oil rig was visible from the beach.
OffstageThe actors waited anxiously offstage for their cue to enter.
OldThe old house was in need of some repairs.
OldenThe olden days were simpler and less hectic.
OlderMy older brother is six years older than me.
OlfactoryThe olfactory receptors in the nose are responsible for detecting scents.
OliveThe walls of the kitchen were painted in a lovely shade of olive green.
OmissibleThe omissible details were not relevant to the story.
OncologicalThe oncological center provided cutting-edge treatments for cancer patients.
OncomingThe oncoming storm looked ominous and threatening.
OneI only have one apple left in my bag.
OngoingThe ongoing investigation into the crime had lasted for months.
OnlyThe only thing left in the fridge was a carton of milk.
OnshoreThe onshore winds brought cooler temperatures to the beach.
OpaqueThe opaque window film provided privacy to the room.
OpenThe open door invited guests to come inside.
OpeningThe opening scene of the movie set the tone for the rest of the story.
OperantThe operant machine produced high-quality products.
OperatingThe operating room was sterile and well-equipped.
OpinionatedThe opinionated talk show host never shied away from controversial topics.
OpponentThe opponent team played aggressively and fought hard to win.
OpportunistThe opportunist businessman used every opportunity to make a profit.
OppositeThe opposite sides of the street had different architectural styles.
OpticThe optic nerve transmits visual information from the eye to the brain.
OptionalThe optional essay assignment was worth extra credit.
OralThe oral presentation was well-prepared and delivered.
OrangeThe orange sunset was a beautiful sight to see.
OrbitalThe orbital space station circled the Earth every 90 minutes.
OrchestralThe orchestral performance was breathtaking and awe-inspiring.
OrdainedThe ordained priest presided over the wedding ceremony.
OrdealThe car accident was a traumatic ordeal for everyone involved.
OrderedThe ordered list of tasks helped me stay focused and productive.
OrdinaryThe ordinary life of a typical suburban family was the subject of the novel.
OrientalThe oriental rug in the living room added warmth and color to the decor.
OrnateThe ornate architecture of the building was a testament to the skill of the craftsmen.
OrthopedicThe orthopedic surgeon performed a successful knee replacement surgery.
OrwellianThe Orwellian society in the novel was a warning against the dangers of totalitarianism.
OstensiveThe ostensive examples provided by the teacher helped the students understand the concept better.
OtherThe other car in the accident was a blue sedan.
OutThe batteries in the remote control were out, so I had to replace them.
OutboundThe outbound flight was delayed due to bad weather.
OutdoorThe outdoor concert was a fun and memorable experience.
OutgoingThe outgoing personality of the host made everyone feel welcome.
OutlandishThe outlandish outfit worn by the singer caused a stir on social media.
OvationThe standing ovation at the end of the play was well-deserved.
OverageThe overage athlete surprised everyone by winning the race.
OverallThe overall performance of the team was impressive.
OvercastThe overcast sky made the day look gloomy and depressing.
OvercomingThe overcoming of personal challenges can be a source of strength and resilience.
OverheadThe overhead cost of running a business can be a significant challenge.
OverlandThe overland journey through the desert was long and arduous.
OverlyThe overly dramatic performance was criticized by the reviewers.
OvernightThe overnight snowstorm left the city covered in a thick blanket of snow.
OvershotThe overshot arrow missed the target and landed in the woods.
OverstuffedThe overstuffed suitcase was difficult to close.
OvertThe overt hostility between the two rivals was hard to ignore.
OverweightThe airline charged an extra fee for overweight baggage.
OwnThe decision to start her own business was a bold move.
OwnedThe owned property was sold at auction.
OwnerlessThe ownerless dog was taken in by a kind-hearted neighbor.
OxidizedThe oxidized metal had a greenish color and a rough texture.
OxlikeThe oxlike strength of the athlete impressed the spectators.

Positive Adjectives that Start with O

Below are 70 adjectives that start withOthat indicate something positive.

AdjectivesExamples
ObedientThe obedient dog quickly sat when its owner commanded it
ObjectiveThe journalist strived to provide an objective report of the situation
ObligatedThe doctor felt obligated to help the injured person
ObligingThe obliging neighbor offered to water the plants while they were away
ObservableThe changes in the sky were observable throughout the day
ObservantThe observant detective spotted a clue that others had missed
ObservationalThe scientist conducted an observational study on the behavior of rats
ObtainableThe book was easily obtainable at the local bookstore
ObviousThe mistake was so obvious that everyone noticed it
OccurrentThe earthquake was an unexpected occurrent event that shook the entire city.
OfficialThe official spokesperson made a statement on behalf of the company
OKThe performance was OK, but there was room for improvement
Okay“Okay, I understand what you’re saying,” said the student
OlympianThe athlete’s Olympian strength helped him win the gold medal
OlympicThe Olympic athlete trained for years to compete at the highest level
OmnibusThe omnibus bill contained many different provisions
OmnidirectionalThe omnidirectional antenna picked up signals from every direction
OmnipotentThe dictator believed he was omnipotent and could do whatever he wanted
OmnipresentThe idea of God as omnipresent is central to many religions
OmniscientThe character in the story had omniscient powers and could read minds
OnThe TV was on, but no one was watching it
OneThe one remaining slice of cake was saved for the guest of honor
OnetimeThe onetime event was a celebration of the company’s anniversary
OngoingThe ongoing project was behind schedule
OpenThe door to the classroom was left open, letting in a cool breeze from outside.
OnlineThe online store offered a wide selection of products
OnlyThe only book on the shelf was a dictionary
OpalescentThe opalescent colors of the butterfly’s wings were mesmerizing
OpalineThe opaline vase shimmered in the sunlight
OpenedThe opened window let in a cool breeze
Open-endedThe open-ended discussion allowed for a wide range of opinions
OpenheartedThe openhearted stranger offered to help the lost child
OpeningThe opening scene of the movie set the tone for the rest of the story
Open-mindedThe open-minded student was always eager to learn from different sources
OperableThe machine was operable after the technician fixed the broken part
OperantThe operant conditioning experiment showed how behavior can be modified
OperaticThe operatic performance left the audience in awe
OperatingThe operating system of the computer controlled all its functions
OperationalThe company’s operational plan was designed to increase efficiency
OperativeThe operative word in the sentence was the key to understanding its meaning
OpportuneThe opportune arrival of the taxi saved them from missing their flight
OpportunistThe opportunistic politician changed his stance to gain more votes
OpportunisticThe opportunistic salesman tricked the elderly couple into buying a product they didn’t need
OptimalThe optimal time to plant the seeds was in the early spring
OptimisticThe optimistic student believed he would do well on the exam
OptimumThe optimum temperature for the experiment was between 25 and 30 degrees Celsius
OptionalThe optional essay assignment was worth extra credit
OpulentThe opulent palace was a symbol of the monarch’s power and wealth
OracularThe oracular words of the old wise man guided the young prince
OrchestralThe orchestral music filled the concert hall with a beautiful melody
OrdainedThe ordained minister performed the wedding ceremony
OrderedThe ordered list of tasks helped the team complete the project on time
OrderlyThe orderly workspace helped the employee work more efficiently
OrganicThe organic fertilizer improved the soil’s fertility
OrganizedThe organized files made it easy to find the document they were looking for
OrientatedThe company’s marketing strategy was orientated toward younger customers
OrientedThe new employee was oriented to the company’s policies and procedures
OriginalThe original concept of the movie was a fresh take on the classic story
OriginativeThe originative artist produced unique and creative pieces of art
OrnamentalThe ornamental flowers added beauty to the garden
OrnateThe ornate architecture of the building reflected the style of the era
OrotundThe orotund voice of the actor commanded the attention of the audience
OrthodoxThe orthodox religious ceremony followed strict rules and customs
OverThe over-packed suitcase was too heavy to lift
OverabundantThe overabundant rainfall caused flooding in the area
OverallThe overall performance of the team was excellent
OverjoyedThe overjoyed child opened the present with excitement
OvertThe overt hostility between the two countries escalated into war

Negative Adjectives that Start with O

Below are 50 adjective words that start with Othat indicate something negative.

AdjectiveMeaning
Oafishclumsy, stupid or uncultured
Obduratestubborn, unyielding, and inflexible
Obesehaving an excessive amount of body fat
Objectionablecausing offense or disapproval
Obligatedrequired or bound to do something
Obligationalrelating to a legal or moral obligation
Obligatoryrequired by law, rule or obligation
Obliterablecapable of being destroyed or erased
Obsessiveexcessive, unhealthy preoccupation or fixation
Obsoleteoutdated, no longer in use or current
Obstinatestubborn, refusing to change one’s opinion or course of action
Obstreperousnoisy, unruly, and difficult to control
Obstructedblocked or impeded, preventing movement or progress
Obstructivecausing blockage or hindrance
Obtrusivenoticeable or prominent in an unwelcome or intrusive way
Obtuseslow to understand, insensitive or dull
Obviouseasily perceived or understood, clear or apparent
Occludedblocked or closed off, preventing passage or access
Occultsupernatural, mystical, or magical beliefs or practices
Occupiedtaken or in use, already being used
Oddstrange or unusual, not fitting in with the norm
Odiousextremely unpleasant, repulsive or offensive
Offnot correct, inappropriate, or unwell
Offensivecausing offense, insulting or hurtful
Oilycontaining or resembling oil, slippery or untrustworthy
Oldaged or not new, having been in existence for a long time
Oldestsuperlative form of “old”, denoting the most aged or earliest
Omissiblecapable of being omitted or left out
Omissiveomitting or leaving something out
Onlyexclusive, without any others or anything else
Oozysoft, slimy, and wet
Opportunisttaking advantage of opportunities as they arise, regardless of morality or ethics
Opportunisticexploiting opportunities for personal gain or advantage
Oppositecompletely different, or positioned on the other side
Oppressivecruel, harsh, or unjustly controlling
Outcasta person who has been rejected by society or a social group
Outclassedinferior or surpassed by others in ability, skill, or quality
Outdatedno longer current or applicable, old-fashioned
Outlawedprohibited by law, forbidden
Outmodedoutdated or old-fashioned, no longer in fashion or popular
Outragedangered, offended or resentful
Outrageousshocking, exceeding all bounds of decency or reasonableness
Overactiveexcessively or overly active, hyperactive
Overagedtoo old for a particular activity or position
Overbearingdomineering, overbearing or oppressive
Overburdenedoverloaded or overwhelmed with tasks or responsibilities
Owingunpaid, yet to be paid or settled

Personality Adjectives that Start with O

Below are 30 adjectives that start withOthat describe a personality.

AdjectiveMeaning
OafishClumsy, boorish, and awkward in manners
ObedientWilling to obey or follow rules or instructions
ObjectiveImpartial, based on facts and evidence rather than feelings
ObligingWilling to do favors or help others
ObnoxiousHighly unpleasant or offensive in behavior, attitude, or taste
ObsessionalExcessively preoccupied with a particular thing or idea
ObsessiveExcessively preoccupied with a particular thing or idea
ObstinateRefusing to change one’s opinion or behavior
OfficiousIntrusively enthusiastic in offering help or advice
OpinionatedHolding strongly to one’s own opinions
OptimisticExpecting positive outcomes and looking on the bright side
OrganizedMethodical and systematic in approach
OstentatiousShowy or pretentious in an attempt to impress
OutgoingFriendly and sociable, enjoying the company of others
OutragedFeeling very angry or indignant
OverachievingWorking excessively hard to attain success or recognition
OveranxiousExcessively worried or nervous
OverbearingDomineering and controlling in manner
OverconcernedExcessively worried or anxious about someone or something
OvercriticalExcessively or unfairly critical
OveremotionalExcessively emotional or sentimental
OverexcitedExcessively or uncontrollably excited or enthusiastic
OverfocusedExcessively or narrowly focused on one thing or goal
OverindulgentExcessively lenient or indulgent, often to the point of harm
OverjoyedExtremely happy or delighted
OvermodestExcessively humble or self-deprecating
OverprotectiveExcessively concerned and protective of someone or something
OverwhelmedFeeling overcome or inundated with emotions or responsibilities
OverwroughtOverly agitated, excited, or emotional
OverzealousExcessively enthusiastic or fervent

Adjectives that Start with O to Describe a Person (not Personality)

Below are 50 adjectives that describe a person that start with O.

AdjectiveMeaning
ObjectionableUnpleasant, offensive, or disagreeable
ObsceneOffensive, indecent, or morally repulsive
OddDifferent from what is usual or expected
OdiousHateful or highly offensive
OffensiveCausing anger or resentment; insulting
OKAcceptable, satisfactory
OkayAcceptable, satisfactory
OldHaving lived for a long time; not young
OlderMore advanced in age than someone else
OldishSomewhat old
OpenWilling to consider new ideas; transparent
OpenhandedGenerous or liberal in giving
OrderlyNeatly and methodically arranged
OrdinaryNormal or average
OutcastRejected or ostracized from society or a group
OutclassedInferior in comparison to someone else
OutdatedNo longer in fashion or current use
OutdoorsyFond of outdoor activities
OutgoingSociable or friendly; extroverted
OutlandishBizarre or eccentric
OutlawUnlawful or criminal; a fugitive from the law
OutmodedNo longer in fashion or current use
OutrageousShockingly bad or excessive; highly offensive
OutrightDirect and straightforward; complete and total
OutspokenFrank and candid in expressing opinions
OutspreadExtending over a wide area
OutstandingExceptional; standing out from others
OverbookedHaving too many appointments or commitments
OverburdenedOverloaded with work, responsibilities, or problems
OverchargedCharged too much, or beyond the reasonable or fair price
OvercoachedOverly trained or instructed, to the point of losing natural ability or creativity
OvercommittedHaving too many commitments or obligations
OvercountedCounted or calculated excessively or inaccurately
OverdevelopedExcessively or artificially developed
OverdosedHaving taken an excessive amount of a drug or medication
OverdressedDressed too formally or elegantly for the occasion
OvereducatedHaving too much education or specialized knowledge
OverexertedOverly tired or exhausted from too much physical or mental effort
OverexertingPutting too much effort into something
OverexposedToo widely or frequently exposed to public view or attention
OverextendedOvercommitted financially or in terms of time or resources
OverfatiguedExtremely tired or exhausted
OverfedGiven too much food or nourishment
OverfulfilledHaving achieved more than what was required or expected
OverinformedOverloaded with information, often to the point of being overwhelmed
OvernighterA short trip or stay that lasts only one night
OversteeredDirected or controlled too much or too forcefully
OverweightWeighing more than is healthy or desirable
OverwhelmingIntense, overpowering, or difficult to cope with

What Are Adjectives that Start with O?

Adjectives are the part of speech that modify nouns or pronouns. The letterOis ripe with adjectives. There are several prefixes that can be added to words to make a new adjective.

  • Omni: means “all” or every.” Example: omnidirectional
  • Open: means “accessible” or “having no enclosure.” Example: openhanded
  • Out: as an adjective, out generally means “more than” or “better than.” Example: outgrow
  • Over: as an adjective, over generally means “upper” or “higher.” Example: overhead

Some of these words will include a hyphen and some may not. Regardless of grammatical rules, in casual writing, the hyphen may or may not be present.

Some words with these prefixes are included here, but there are many more possibilities.

O Adjectives | Image

Adjectives that Start with O (1200 O Adjectives in English) • 7ESL (2)

List of Adjectives that Start with O

Adjectives that Start with Oa, Ob

  • Oafish
  • Oak
  • Oaken
  • Obdurant
  • Obdurate
  • Obedible
  • Obedient
  • Obediential
  • Obedt
  • Obeisant
  • Obeisaunt
  • Obese
  • Obfuscatory
  • Obituary
  • Object-based
  • Objectionable
  • Objectionable
  • Objectional
  • Objective
  • Objectless
  • Object-oriented
  • Objectual
  • Oblate
  • Oblationary
  • Obligate
  • Obligated
  • Obligational
  • Obligatory
  • Obliged
  • Obliging
  • Oblike
  • Oblimin
  • Oblique
  • Obliquid
  • Oblite
  • Obliterable
  • Obliterated
  • Obliterative
  • Oblivious
  • Oblong
  • Obnoxious
  • Obscene
  • Obscurant
  • Obscure
  • Obsequious
  • Observable
  • Observant
  • Observational
  • Observed
  • Observing
  • Obsessed
  • Obsessional
  • Obsessive
  • Obsignatory
  • Obsolescent
  • Obsolete
  • Obsoleter
  • Obstacle-ridden
  • Obstacular
  • Obstetric
  • Obstetrical
  • Obstetricious
  • Obstetrick
  • Obstinant
  • Obstinate
  • Obstreperous
  • Obstructed
  • Obstructive
  • Obstruent
  • Obtainable
  • Obtrusive
  • Obtuse
  • Obtuse-angled
  • Obverse
  • Obviating
  • Obvious

Adjectives that Start with Oc

  • Occasional
  • Occidental
  • Occipital
  • Occluded
  • Occlusal
  • Occluse
  • Occlusional
  • Occlusive
  • Occulent
  • Occulomotor
  • Occult
  • Occultic
  • Occultistic
  • Occultive
  • Occultural
  • Occupational
  • Occupiable
  • Occupied
  • Occurrent
  • Ocean-going
  • Oceanic
  • Oceanward
  • Ocellar
  • Ocellated
  • Ocher
  • Ochre
  • Ochreous
  • Ochrous
  • Ocreate
  • Octabasic
  • Octacore
  • Octacosanoic
  • Octacyclic
  • Octagonal
  • Octahedral
  • Octal
  • Octameric
  • Octangular
  • Octanoic
  • Octogenarian
  • Octogynous
  • Octoic
  • Octoid
  • Octolateral
  • Octolocular
  • Octonary
  • Octonionic
  • Octonocular
  • Octopaminergic
  • Octopartite
  • Octopean
  • Octopetalous
  • Octopian
  • Octopic
  • Octopine
  • Octoploid
  • Octopodal
  • Octopodous
  • Octopoid
  • Octopoidal
  • Octopolar
  • Octosyllabic
  • Octuple
  • Ocular

Adjectives that Start with Od

  • Odd
  • Oddish
  • Odds-on
  • Odd-toed
  • Odic
  • Odiferous
  • Odinic
  • Odious
  • Odobenine
  • Odometric
  • Odometrical
  • Odontoid
  • Odorant
  • Odoriferous
  • Odorless
  • Odorous
  • Odourful
  • Odourless

Adjectives that Start with Oe

  • Oecumenic
  • Oecumenical
  • Oedematous
  • Oedipal
  • Oenological
  • Oenophilic
  • Oestral
  • Oestrogenic
  • Oestrous

Adjectives that Start with Of

  • Off
  • Off-air
  • Off-base
  • Off-beam
  • Offbeat
  • Off-book
  • Off-broadway
  • Off-campus
  • Off-center
  • Off-colour
  • Offduty
  • Offenceless
  • Offended
  • Offending
  • Offensive
  • Off-field
  • Off-guard
  • Offhand
  • Off-hand
  • Official
  • Officiary
  • Officinal
  • Officious
  • Offish
  • Off-key
  • Off-kilter
  • Off-limits
  • Offline
  • Off-line
  • Off-peak
  • Off-piste
  • Off-put
  • Offputting
  • Off-putting
  • Off-road
  • Off-sale
  • Offscreen
  • Off-screen
  • Offshore
  • Offside
  • Offsides
  • Offsite
  • Off-site
  • Offstage
  • Off-street
  • Off-target
  • Off-the-ball
  • Off-the-cuff
  • Off-the-peg
  • Off-the-rack
  • Off-the-record
  • Off-the-shelf
  • Off-the-shoulder
  • Off-the-wall
  • Off-track
  • Off-white
  • Oft-repeated

Adjectives that Start with Og, Oh, Oi

  • Ogival
  • Ogreish
  • Ohmic
  • Oily

Adjectives that Start with Ok, Ol

  • Ok
  • Okay
  • Old
  • Olde
  • Olden
  • Older
  • Oldest
  • Oldfashioned
  • Old-fashioned
  • Old-growth
  • Old-hat
  • Oldish
  • Oldline
  • Old-line
  • Old-maidish
  • Old-school
  • Old-time
  • Old-world
  • Ole
  • Oleaceous
  • Oleaginous
  • Oleanolic
  • Olefinic
  • Oleic
  • Olent
  • Oleochemical
  • Oleographic
  • Oleophilic
  • Oleophobic
  • Oleoresinous
  • Oleose
  • Oleraceous
  • Olfactive
  • Olfactory
  • Oligaemic
  • Oligarchic
  • Oligarchical
  • Oligomeric
  • Oligopolistic
  • Oligosaline
  • Oligosemic
  • Oligosynaptic
  • Oligotrichous
  • Oligotrophic
  • Oliguric
  • Olivary
  • Olive
  • Olivelike
  • Olympian
  • Olympic

Adjectives that Start with Om

  • Omakase
  • Omani
  • Omasal
  • Ominous
  • Omissible
  • Omissive
  • Ommatidial
  • Omnibus
  • Omnipotent
  • Omnipresent
  • Omniscient
  • Omnivorous
  • Omohyoidean
  • Omophagic
  • Omophagous
  • Omosternal
  • Omotic
  • Omphacine
  • Omphacitic
  • Omphalic
  • Omphalinoid

Adjectives that Start with On

  • On
  • On-air
  • Onanistic
  • On-camera
  • On-campus
  • Once-removed
  • Oncogenetic
  • Oncogenic
  • Oncogenomic
  • Oncologic
  • Oncological
  • Oncoming
  • One
  • One-armed
  • One-day
  • One-eighth
  • One-eyed
  • One-fifth
  • One-fourth
  • One-gallused
  • One-half
  • One-handed
  • Oneiric
  • One-legged
  • One-ninth
  • One-note
  • One-off
  • One-on-one
  • One-piece
  • One-pot
  • One-quarter
  • Onerous
  • One-seventh
  • One-shot
  • Onesided
  • One-sided
  • One-sixth
  • One-stop
  • One-tenth
  • One-third
  • Onetime
  • One-time
  • One-to-one
  • One-touch
  • One-track
  • One-way
  • Ongoing
  • On-going
  • On-hand
  • Onioned
  • Onionless
  • Onionlike
  • Oniony
  • Oniric
  • Onirocritic
  • Onkus
  • Onlest
  • Onlie
  • Online
  • On-line
  • Onlooking
  • Only
  • On-off
  • Onomastic
  • Onomatopoeic
  • On-road
  • Onrushing
  • On-scene
  • Onscreen
  • On-screen
  • Onshore
  • Onside
  • Onsite
  • On-site
  • Onstage
  • On-stage
  • On-the-job
  • On-the-spot
  • Ontic
  • Ontogenetic
  • Ontologic
  • Ontological
  • Onward
  • Onygenaceous
  • Onymous
  • Onyx

Adjectives that Start with Oo, Op

  • Oo
  • Oob
  • Oofy
  • Oolitic
  • Oozy
  • Opacating
  • Opacifiable
  • Opacous
  • Opacular
  • Opalescent
  • Opaline
  • Opaque
  • Open
  • Openable
  • Open-air
  • Open-and-shut
  • Open-armed
  • Open-book
  • Opencast
  • Opencut
  • Opened
  • Open-ended
  • Open-eyed
  • Open-faced
  • Open-handed
  • Open-hearted
  • Open-hearth
  • Opening
  • Open-minded
  • Open-mouthed
  • Open-plan
  • Opensightly
  • Opensource
  • Opephoroid
  • Operable
  • Operant
  • Operatic
  • Operating
  • Operational
  • Operationalist
  • Operative
  • Opercular
  • Operculate
  • Operculated
  • Operose
  • Ophidian
  • Ophiolitic
  • Opiate
  • Opinionated
  • Oppilative
  • Opponent
  • Opportune
  • Opportunist
  • Opportunistic
  • Opposable
  • Opposed
  • Opposing
  • Opposite
  • Oppositional
  • Oppositive
  • Oppressed
  • Oppressional
  • Oppressive
  • Opprobrious
  • Opsonic
  • Optative
  • Opthalmic
  • Optic
  • Optical
  • Optimal
  • Optimific
  • Optimistic
  • Optimum
  • Optional
  • Optoelectronic
  • Optokinetic
  • Optomotor
  • Optospintronic
  • Optothermal
  • Optotypic
  • Optronic
  • Opulent
  • Opuntiaceous

Adjectives that Start with Or

  • Oracular
  • Oral
  • Orange
  • Orangey
  • Orangish
  • Orangy
  • Oratorial
  • Oratorian
  • Oratorical
  • Orbicular
  • Orbiculate
  • Orbital
  • Orbitary
  • Orbitual
  • Orbless
  • Orblike
  • Orchestral
  • Orchestrated
  • Orcish
  • Ordained
  • Ordeal
  • Orderable
  • Ordered
  • Orderly
  • Ordinal
  • Ordinary
  • Ordinate
  • Ordurous
  • Orectic
  • Oregonian
  • Organic
  • Organismal
  • Organismic
  • Orgasmic
  • Orgastic
  • Orgiastic
  • Orgulous
  • Orient
  • Oriental
  • Orientated
  • Orientating
  • Orientational
  • Oriented
  • Orienting
  • Origenian
  • Origenist
  • Origenistic
  • Originable
  • Original
  • Originary
  • Originative
  • Originless
  • Orinasal
  • Orinocan
  • Orkish
  • Ornamental
  • Ornate
  • Ornery
  • Ornithogenic
  • Ornithological
  • Ornithophilous
  • Orogastric
  • Orogenic
  • Orogenital
  • Orographic
  • Orographical
  • Orolabial
  • Orolingual
  • Orological
  • Oromucosal
  • Oronasal
  • Oroqen
  • Orosensory
  • Orosirian
  • Orotund
  • Orphaned
  • Orphic
  • Orthodontic
  • Orthodox
  • Orthoepic
  • Orthogenetic
  • Orthogenic
  • Orthognathic
  • Orthogonal
  • Orthograde
  • Orthologous
  • Orthometric
  • Orthopedic
  • Orthoptic
  • Orthorhombic
  • Orthostatic
  • Orthotopic
  • Orthotropic

Adjectives that Start with Os

  • Os
  • Oscillating
  • Oscillatory
  • Oscine
  • Oscitant
  • Osculating
  • Osculatory
  • Osmobiotic
  • Osmolar
  • Osmometric
  • Osmotic
  • Osseous
  • Ossicular
  • Ossiculate
  • Ossiferous
  • Ossified
  • Ossom
  • Os-specific
  • Osteal
  • Ostensible
  • Ostensive
  • Ostentatious
  • Osteoarthritic
  • Osteogenetic
  • Osteogenic
  • Osteoid
  • Osteopathic
  • Osteoporotic
  • Ostial
  • Ostrich-like

Adjectives that Start with Ot

  • Other
  • Otherwise
  • Other-worldly
  • Otic
  • Otoscopic
  • Ototoxic
  • Otterless
  • Otterlike
  • Otter

Adjectives that Start with Ou

  • Out
  • Out of work
  • Out-and-out
  • Outback
  • Outboard
  • Outbound
  • Outbred
  • Outcast
  • Outclassed
  • Outcoming
  • Outcut
  • Outdacious
  • Outdate
  • Outdated
  • Outdoor
  • Outdoorsy
  • Outer
  • Outermost
  • Outfitted
  • Outflowing
  • Outflung
  • Outgoing
  • Outgunned
  • Outjutting
  • Outland
  • Outlandish
  • Outlaw
  • Outlawed
  • Outlined
  • Outlying
  • Outmoded
  • Outmost
  • Out-of-body
  • Out-of-character
  • Out-of-context
  • Out-of-court
  • Out-of-date
  • Out-of-order
  • Out-of-pocket
  • Out-of-print
  • Out-of-service
  • Out-of-state
  • Out-of-town
  • Out-of-work
  • Outraged
  • Outrageous
  • Outright
  • Outshore
  • Outside
  • Outsize
  • Outsized
  • Outspoken
  • Outspread
  • Outstanding
  • Outward
  • Ouvrierist

Adjectives that Start with Ov

  • Oval
  • Ovaloid
  • Ovarian
  • Ovate
  • Ovation
  • Ovenproof
  • Oven-proof
  • Over
  • Overabundant
  • Overachiever
  • Overachieving
  • Overactive
  • Overage
  • Overaged
  • Overaggressive
  • Overalert
  • Overall
  • Overalled
  • Overanxious
  • Overapt
  • Overarm
  • Overattentive
  • Overawed
  • Overbanked
  • Overbearing
  • Overblown
  • Overbold
  • Overbooked
  • Overbreathed
  • Overburdened
  • Overbusy
  • Overcareful
  • Overcast
  • Overcautious
  • Overcharged
  • Overcivilized
  • Overclad
  • Overclaimed
  • Overclear
  • Overclose
  • Overclothed
  • Overcluttered
  • Overcoached
  • Overcoated
  • Overcoatless
  • Overcoming
  • Overcommitted
  • Overcomplicated
  • Overconcerned
  • Overconfident
  • Overconscientious
  • Overconscious
  • Overconsiderate
  • Overcounted
  • Overcritical
  • Overcurious
  • Overdamped
  • Overdelicate
  • Overdependent
  • Overdetermined
  • Overdeveloped
  • Overdocumented
  • Overdominant
  • Overdone
  • Overdoped
  • Overdosed
  • Overdramatic
  • Overdressed
  • Overdue
  • Overeager
  • Overeducated
  • Over-educated
  • Over-elaborate
  • Overemotional
  • Overemphatic
  • Overenthusiastic
  • Overexcitable
  • Overexcited
  • Overexerted
  • Overexerting
  • Overexposed
  • Overextended
  • Overfamiliar
  • Overfatigued
  • Overfed
  • Overflowing
  • Overfocused
  • Overfond
  • Over-fond
  • Overforceful
  • Overforested
  • Overforward
  • Overfragrant
  • Overfraught
  • Overfree
  • Overfreighted
  • Overfrequent
  • Overfriendly
  • Overfriezed
  • Overfruitful
  • Overful
  • Overfulfilled
  • Overfull
  • Overfurnished
  • Overfussy
  • Overgenerous
  • Overgreedy
  • Overgrown
  • Overhand
  • Overhanded
  • Overhasty
  • Overhead
  • Overheated
  • Overhyped
  • Overinclusive
  • Overindebted
  • Overintense
  • Overinvested
  • Overinvolved
  • Overionized
  • Overish
  • Overjealous
  • Overjittery
  • Overjoyed
  • Overjoyous
  • Overjubilant
  • Overjust
  • Overkeen
  • Overladen
  • Overland
  • Overlarge
  • Overlayered
  • Overloaded
  • Overlookable
  • Overlooked
  • Overly
  • Overlying
  • Overmastering
  • Overmighty
  • Overmodest
  • Overmotivated
  • Overmuch
  • Overmuscled
  • Overneat
  • Overnew
  • Overnice
  • Overnight
  • Overnighter
  • Overoptimistic
  • Overpessimistic
  • Overplayful
  • Over-polite
  • Overpriced
  • Overproof
  • Overproud
  • Overqualified
  • Overraced
  • Overracked
  • Overrank
  • Overrash
  • Over-rated
  • Overreaching
  • Overreactive
  • Over-reactive
  • Overread
  • Overready
  • Overrefined
  • Overriding
  • Overripe
  • Over-ripe
  • Oversea
  • Overseas
  • Oversensitive
  • Over-sensitive
  • Overserious
  • Oversewn
  • Oversexed
  • Overshot
  • Oversimplistic
  • Oversize
  • Oversized
  • Overslow
  • Oversmoothed
  • Oversnowed
  • Oversocialized
  • Oversoft
  • Oversolar
  • Oversolicitous
  • Oversophisticated
  • Oversparred
  • Overspecific
  • Overspeeding
  • Overstated
  • Oversteered
  • Overstimulated
  • Overstrung
  • Overstuffed
  • Oversubscribed
  • Oversuspicious
  • Overt
  • Over-the-counter
  • Over-the-top
  • Overtight
  • Overtired
  • Overtouristed
  • Overtroubled
  • Overtrusting
  • Overturnable
  • Overturned
  • Overuniform
  • Overvaliant
  • Overwater
  • Overweening
  • Overweight
  • Overwhelmed
  • Overwhelming
  • Overwrought
  • Overzealous
  • Over-zealous
  • Ovid
  • Oviform
  • Ovigerous
  • Oviparous
  • Ovular
  • Ovulational

Adjectives that Start with Ow, Ox

  • Ower
  • Owing
  • Owlish
  • Own
  • Owned
  • Ownerless
  • Oxalic
  • Oxblood
  • Oxeyed
  • Ox-eyed
  • Oxonian
  • Oxyacetic
  • Oxygenic
  • Oxyntic
  • Oxytocic

Adjectives that Start with Oy, Oz

  • Oyster
  • Oysterish
  • Oysterless
  • Oysterlike
  • Oystery
  • Ozone-friendly
Adjectives that Start with O (1200 O Adjectives in English) • 7ESL (3)
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