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Glossary · Adjectives · O

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TermTypeDefinitionClassificationsUpdated
Ophthalmicadjectiveof or relating to ophthalmologycandidateMay 18, 2026
Opinionatedadjectiveobstinate in your opinionscandidateMay 18, 2026
Opinionativeadjectiveobstinate in your opinionscandidateMay 18, 2026
Opisthognathousadjectivehaving receding jawscandidateMay 18, 2026
Opponentadjectivecharacterized by active hostilitycandidateMay 18, 2026
Opportuneadjectivesuitable or at a time that is suitable or advantageous especially for a particular purposecandidateMay 18, 2026
Opportunistadjectivetaking immediate advantage, often unethically, of any circumstance of possible benefitcandidateMay 18, 2026
Opportunisticadjectivetaking immediate advantage, often unethically, of any circumstance of possible benefitcandidateMay 18, 2026
Opposableadjectivecapable of being placed opposite to somethingcandidateMay 18, 2026
Opposedadjectivebeing in opposition or having an opponentcandidateMay 18, 2026
Opposingadjectivecharacterized by active hostilitycandidateMay 18, 2026
Oppositeadjectivealtogether different in nature or quality or significancecandidateMay 18, 2026
Oppositiveadjectiveexpressing antithesis or oppositioncandidateMay 18, 2026
Oppressedadjectiveburdened psychologically or mentallycandidateMay 18, 2026
Oppressiveadjectivemarked by unjust severity or arbitrary behaviorcandidateMay 18, 2026
Opprobriousadjective(used of conduct or character) deserving or bringing disgrace or shamecandidateMay 18, 2026
Optativeadjectiverelating to a mood of verbs in some languagescandidateMay 18, 2026
Opthalmicadjectiveof or relating to or resembling the eyecandidateMay 18, 2026
Opticadjectiveof or relating to or resembling the eyecandidateMay 18, 2026
Opticaladjectiveof or relating to or involving light or opticscandidateMay 18, 2026
Optimaladjectivemost desirable possible under a restriction expressed or impliedcandidateMay 18, 2026
Optimisticadjectiveexpecting the best in this best of all possible worldscandidateMay 18, 2026
Optimumadjectivemost desirable possible under a restriction expressed or impliedcandidateMay 18, 2026
Optionaladjectivepossible but not necessarycandidateMay 18, 2026
Opulentadjectiverich and superior in qualitycandidateMay 18, 2026
Oracularadjectiveresembling an oracle in obscurity of thoughtcandidateMay 18, 2026
Oraladjectivea stage in psychosexual development when the child's interest is concentrated in the mouthcandidateMay 18, 2026
Orangeadjectiveof the color between red and yellowcandidateMay 18, 2026
Orange-Brownadjectiveof brown tinged with orangecandidateMay 18, 2026
Orange-Coloredadjectivehaving the color of ripe orangescandidateMay 18, 2026
Orange-Colouredadjectivehaving the color of ripe orangescandidateMay 18, 2026
Orange-Floweredadjectivehaving orange flowerscandidateMay 18, 2026
Orange-Huedadjectivehaving the color of ripe orangescandidateMay 18, 2026
Orange-Redadjectiveof red tinged with orangecandidateMay 18, 2026
Orange-Sizedadjectivehaving the approximate size of an orangecandidateMay 18, 2026
Orangishadjectiveof the color between red and yellowcandidateMay 18, 2026
Orangish-Redadjectiveof red tinged with orangecandidateMay 18, 2026
Oratoricaladjectivecharacteristic of an orator or oratorycandidateMay 18, 2026
Orbicularadjectivehaving the shape of a sphere or ballcandidateMay 18, 2026
Orbiculateadjectivecircular or nearly circularcandidateMay 18, 2026
Orbitaladjectiveof or relating to the eye socketcandidateMay 18, 2026
Orbitualadjectivedescribing a circlecandidateMay 18, 2026
Orchestraladjectiverelating to or composed for an orchestracandidateMay 18, 2026
Orchestratedadjectivearranged for performance by an orchestracandidateMay 18, 2026
Ordainedadjectivefixed or established especially by order or commandcandidateMay 18, 2026
Orderedadjectivemarked by an orderly, logical, and aesthetically consistent relation of partscandidateMay 18, 2026
Orderlyadjectivedevoid of violence or disruptioncandidateMay 18, 2026
Ordinaladjectivebeing or denoting a numerical order in a seriescandidateMay 18, 2026
Ordinaryadjectivenot exceptional in any way especially in quality or ability or size or degreecandidateMay 18, 2026
Organicadjectiveof or relating to foodstuff grown or raised without synthetic fertilizers or pesticides or hormonescandidateMay 18, 2026
Organicisticadjectiverelating to or tending toward organicismcandidateMay 18, 2026
Organisationaladjectiveof or relating to an organizationcandidateMay 18, 2026
Organisedadjectivebeing a member of or formed into a labor unioncandidateMay 18, 2026
Organismaladjectiveof or relating to or belonging to an organism (considered as a whole)candidateMay 18, 2026
Organismicadjectiveof or relating to or belonging to an organism (considered as a whole)candidateMay 18, 2026
Organizationaladjectiveof or relating to an organizationcandidateMay 18, 2026
Organizedadjectivemethodical and efficient in arrangement or functioncandidateMay 18, 2026
Orgiasticadjectiveused of riotously drunken merrymakingcandidateMay 18, 2026
Orientaladjectivedenoting or characteristic of countries of AsiacandidateMay 18, 2026
Orientatedadjectiveadjusted or located in relation to surroundings or circumstancescandidateMay 18, 2026
Orientatingadjectivepositioning with respect to a reference system or determining your bearings physically or intellectuallycandidateMay 18, 2026
Orientedadjectiveadjusted or located in relation to surroundings or circumstancescandidateMay 18, 2026
Orientingadjectivepositioning with respect to a reference system or determining your bearings physically or intellectuallycandidateMay 18, 2026
Originaladjectivenot secondhand or by way of something intermediary, such as informationcandidateMay 18, 2026
Originativeadjectivehaving the ability or power to createcandidateMay 18, 2026
Ornamentaladjectiveserving an esthetic rather than a useful purposecandidateMay 18, 2026
Ornateadjectivemarked by elaborate rhetoric and elaborated with decorative detailscandidateMay 18, 2026
Orneryadjectivehaving a difficult and contrary dispositioncandidateMay 18, 2026
Ornithologicaladjectiveof or relating to ornithologycandidateMay 18, 2026
Oropharyngealadjectiveof or relating to or located near the oropharynxcandidateMay 18, 2026
Orotundadjectiveostentatiously lofty in stylecandidateMay 18, 2026
Orphanedadjectivedeprived of parents by death or desertioncandidateMay 18, 2026
Orphicadjectivehaving an import not apparent to the senses nor obvious to the intelligencecandidateMay 18, 2026
Orthodonticadjectiveof or relating to or involving or practicing orthodonticscandidateMay 18, 2026
Orthodoxadjectiveof or relating to or characteristic of the Eastern Orthodox ChurchcandidateMay 18, 2026
Orthogonaladjectivenot pertinent to the matter under considerationcandidateMay 18, 2026
Orthographicadjectiveof or relating to or expressed in orthographycandidateMay 18, 2026
Orthomolecularadjectivedesignating or relating to a form of treatment of mental disorders that seeks to restore biochemical balance in the body with large doses of vitamins and mineralscandidateMay 18, 2026
Orthopaedicadjectiveof or relating to orthopedicscandidateMay 18, 2026
Orthopedicadjectiveof or relating to orthopedicscandidateMay 18, 2026
Orthopedicaladjectiveof or relating to orthopedicscandidateMay 18, 2026
Orthopticadjectiveof or relating to normal binocular visioncandidateMay 18, 2026
Orthostaticadjectivepertaining to an upright standing posturecandidateMay 18, 2026
Orthotropousadjective(of a plant ovule) completely straight with the micropyle at the apexcandidateMay 18, 2026
Orwellianadjectiveresembling the totalitarian political methods critqued in the works of George Orwell, particularly in his novel Nineteen Eighty-Four; these are characterized by the use of misleading terminology, propaganda, censorship, totalitarianism, surveillance and repressioncandidateMay 18, 2026
Oscan-Speakingadjectiveable to communicate in OscancandidateMay 18, 2026
Oscillatingadjectivehaving periodic vibrationscandidateMay 18, 2026
Oscillatoryadjectivehaving periodic vibrationscandidateMay 18, 2026
Oscineadjectiveof or relating to the songbirdscandidateMay 18, 2026
Oscitantadjectiveshowing lack of attention or boredomcandidateMay 18, 2026
Osmoticadjectiveof or relating to osmosiscandidateMay 18, 2026
Osseousadjectivecomposed of or containing bonecandidateMay 18, 2026
Ossicularadjectivepertaining to the ossicles in the middle earcandidateMay 18, 2026
Ossiculateadjectivepertaining to the ossicles in the middle earcandidateMay 18, 2026
Ossiferousadjectivecontaining bones (especially fossil bones)candidateMay 18, 2026
Ossifiedadjectiveset in a rigidly conventional pattern of behavior, habits, or beliefscandidateMay 18, 2026
Ostealadjectiverelating to bone or to the skeletoncandidateMay 18, 2026
Ostensibleadjectiveappearing as such but not necessarily socandidateMay 18, 2026
Ostensiveadjectiverepresented or appearing as suchcandidateMay 18, 2026
Ostentatiousadjectiveintended to attract notice and impress otherscandidateMay 18, 2026