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Glossary · Verbs · O

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TermTypeDefinitionClassificationsUpdated
o.d.verbdose too heavilyUnclassifiedJun 3, 2026
o.k.verbto give sanction toEvaluateUnclassifiedJun 3, 2026
obeyverbbe obedient toApplyUnclassifiedJun 3, 2026
obfuscateverbmake obscure or unclearApplyUnclassifiedJun 3, 2026
objectverbexpress or raise an objection or protest or criticism or express dissentEvaluateUnclassifiedJun 3, 2026
objectifyverbmake external or objective, or give reality toAnalyzeUnclassifiedJun 3, 2026
objurgateverbexpress strong disapproval ofUnderstandUnclassifiedJun 3, 2026
obligateverbcommit in order to fulfill an obligationUnclassifiedJun 3, 2026
obligeverbprovide a service or favor for someoneApplyUnclassifiedJun 3, 2026
obliterateverbmake undecipherable or imperceptible by obscuring or concealingUnderstandUnclassifiedJun 3, 2026
obnubilateverbmake unclear, indistinct, or blurredUnderstandUnclassifiedJun 3, 2026
obscureverbmake undecipherable or imperceptible by obscuring or concealingApplyUnclassifiedJun 3, 2026
observeverbwatch carefully and attentively to gather information or dataRememberUnclassifiedJun 3, 2026
obsessverbbe preoccupied with somethingUnderstandUnclassifiedJun 3, 2026
obsolesceverbbecome obsolete, fall into disuseUnderstandUnclassifiedJun 3, 2026
obstinateverbpersist stubbornlyUnclassifiedJun 3, 2026
obstipateverbconstipate severelyUnclassifiedJun 3, 2026
obstructverbshut out from view or get in the way so as to hide from sightApplyUnclassifiedJun 3, 2026
obtainverbTo gain, secure, or acquire something, usually by planned action or effort.ApplyUnclassifiedJun 3, 2026
obtrudeverbthrust oneself in as if by forceApplyUnclassifiedJun 3, 2026
obtrude uponverbMWEto intrude upon, infringe, encroach on, violateAnalyzeUnclassifiedJun 3, 2026
obtundverbreduce the edge or violence ofApplyUnclassifiedJun 3, 2026
obturateverbblock passage throughApplyUnclassifiedJun 3, 2026
obviateverbprevent the occurrence ofApplyUnclassifiedJun 3, 2026
occasionverbgive occasion toUnclassifiedJun 3, 2026
occidentaliseverbmake western in characterApplyUnclassifiedJun 3, 2026
occidentalizeverbmake western in characterApplyUnclassifiedJun 3, 2026
occludeverbblock passage throughUnderstandUnclassifiedJun 3, 2026
occultverbbecome concealed or hidden from view or have its light extinguishedUnderstandUnclassifiedJun 3, 2026
occupyverbmarch aggressively into another's territory by military force for the purposes of conquest and occupationApplyUnclassifiedJun 3, 2026
occurverbto be found to existUnclassifiedJun 3, 2026
odoriseverbcause to smell or be smellyApplyUnclassifiedJun 3, 2026
odorizeverbcause to smell or be smellyApplyUnclassifiedJun 3, 2026
odouriseverbcause to smell or be smellyApplyUnclassifiedJun 3, 2026
offverbkill intentionally and with premeditationUnclassifiedJun 3, 2026
offendverbact in disregard of laws, rules, contracts, or promisesUnclassifiedJun 3, 2026
offerverbmake available or accessible, provide or furnishUnclassifiedJun 3, 2026
offer upverbMWEpresent as an act of worshipApplyUnclassifiedJun 3, 2026
officerverbdirect or command as an officerUnclassifiedJun 3, 2026
officialiseverbmake officialApplyUnclassifiedJun 3, 2026
officializeverbmake officialApplyUnclassifiedJun 3, 2026
officiateverbact in an official capacity in a ceremony or religious ritual, such as a weddingApplyUnclassifiedJun 3, 2026
offloadverbtransfer to a peripheral device, of computer dataApplyUnclassifiedJun 3, 2026
offsaddleverbremove the saddle fromApplyUnclassifiedJun 3, 2026
offsetverbcause (printed matter) to transfer or smear onto another surfaceApplyUnclassifiedJun 3, 2026
ogleverblook at with amorous intentionsUnclassifiedJun 3, 2026
oilverbadminister an oil or ointment toApplyUnclassifiedJun 3, 2026
oinkverbutter a high-pitched cry, characteristic of pigsUnclassifiedJun 3, 2026
okverbto give sanction toUnclassifiedJun 3, 2026
okayverbto give sanction toUnclassifiedJun 3, 2026
okehverbto give sanction toUnclassifiedJun 3, 2026
omenverbindicate by signsUnclassifiedJun 3, 2026
omitverbidentify what has been left out or intentionally exclude somethingApplyUnclassifiedJun 3, 2026
one-stepverbdance the one-stepUnclassifiedJun 3, 2026
oohverbexpress admiration and pleasure by uttering `ooh' or `aah'UnclassifiedJun 3, 2026
oozeverbpass gradually or leak through or as if through small openingsUnclassifiedJun 3, 2026
ooze outverbMWErelease (a liquid) in drops or small quantitiesUnderstandUnclassifiedJun 3, 2026
ooze throughverbMWErun slowly and graduallyUnclassifiedJun 3, 2026
opacifyverbbecome opaqueApplyUnclassifiedJun 3, 2026
opalesceverbexhibit a play of colors like that of an opalUnclassifiedJun 3, 2026
opaliseverbreplace or convert into opalUnclassifiedJun 3, 2026
opalizeverbreplace or convert into opalUnclassifiedJun 3, 2026
openverbdisplay the contents of a file or start an application as on a computerApplyUnclassifiedJun 3, 2026
open fireverbMWEstart firing a weaponApplyUnclassifiedJun 3, 2026
open upverbMWEstart to operate or function or cause to start operating or functioningUnderstandUnclassifiedJun 3, 2026
operateverbuse, control, or run equipment, systems, or processesApplySecondaryJun 3, 2026
operate onverbMWEperform surgery onApplyUnclassifiedJun 3, 2026
opineverbexpress one's opinion openly and without fear or hesitationEvaluateUnclassifiedJun 3, 2026
opinionverbexpress or evaluate a personal view or judgmentEvaluateUnclassifiedJun 3, 2026
opposeverbcontrast with equal weight or forceEvaluateUnclassifiedJun 3, 2026
oppressverbcome down on or keep down by unjust use of one's authorityUnderstandUnclassifiedJun 3, 2026
oppugnverbchallenge the accuracy, probity, or propriety ofAnalyzeUnclassifiedJun 3, 2026
opsoniseverbmake (cells) more susceptible to the action of phagocytesApplyUnclassifiedJun 3, 2026
opsonizeverbmake (cells) more susceptible to the action of phagocytesApplyUnclassifiedJun 3, 2026
optverbselect as an alternative over anotherApplyUnclassifiedJun 3, 2026
opt outverbMWEchoose not to do something, as out of fear of failingApplyUnclassifiedJun 3, 2026
optimiseverbmodify to achieve maximum efficiency in storage capacity or time or costApplyUnclassifiedJun 3, 2026
optimizeverbadjust or improve something to achieve the best possible resultEvaluateUnclassifiedJun 3, 2026
orateverbdeliver a formal speech or presentation to an audienceApplyUnclassifiedJun 3, 2026
orbverbmove in an orbitUnclassifiedJun 3, 2026
orbitverbmove in an orbitUnderstandUnclassifiedJun 3, 2026
orchestrateverbplan and direct (a complex undertaking)CreateUnclassifiedJun 3, 2026
ordainverbinvest with ministerial or priestly authorityCreateUnclassifiedJun 3, 2026
orderverbarrange items in a logical sequence or hierarchyApplyUnclassifiedJun 3, 2026
ordinateverbbring (components or parts) into proper or desirable coordination correlationApplyUnclassifiedJun 3, 2026
organiseverbcause to be structured or ordered or operating according to some principle or ideaApplyUnclassifiedJun 3, 2026
organizeverbarrange or structure elements systematically for efficiency or clarityApplyUnclassifiedJun 3, 2026
orientverbfamiliarize (someone) with new surroundings or circumstancesUnderstandUnclassifiedJun 3, 2026
orientaliseverbmake oriental in characterApplyUnclassifiedJun 3, 2026
orientalizeverbmake oriental in characterAnalyzeUnclassifiedJun 3, 2026
orientateverbdetermine one's position with reference to another pointUnderstandUnclassifiedJun 3, 2026
originalverbproduce something unique and not derived from existing workCreateUnclassifiedJun 3, 2026
originateverbcreate, initiate, or give rise to something newCreateUnclassifiedJun 3, 2026
originate inverbMWEcome fromUnderstandUnclassifiedJun 3, 2026
ornamentverbmake more attractive by adding ornament, colour, etc.ApplyUnclassifiedJun 3, 2026
orphanverbdeprive of parentsUnclassifiedJun 3, 2026
oscillateverbmove or swing from side to side regularlyUnderstandUnclassifiedJun 3, 2026
osculateverbtouch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.UnderstandUnclassifiedJun 3, 2026
ossifyverbmake rigid and set into a conventional patternUnderstandUnclassifiedJun 3, 2026
ostentateverbdisplay proudlyUnclassifiedJun 3, 2026