| obey | (verb) be obedient to | - |
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| obfuscate | (verb) make obscure or unclear | - |
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| object | (verb) express or raise an objection or protest or criticism or express dissent | - |
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| (verb) be averse to or express disapproval of | - |
| objectify | (verb) make impersonal or present as an object | Synonyms: depersonalise, depersonalize |
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| (verb) make external or objective, or give reality to | Synonyms: exteriorise, exteriorize, externalise, externalize |
| objurgate | (verb) express strong disapproval of | Synonyms: condemn, decry, excoriate, reprobate |
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| (verb) censure severely | Synonyms: castigate, chasten, chastise, correct |
| obligate | (verb) bind by an obligation; cause to be indebted | Synonyms: bind, hold, oblige |
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| (verb) commit in order to fulfill an obligation | - |
| (verb) force somebody to do something | Synonyms: compel, oblige |
| oblige | (verb) bind by an obligation; cause to be indebted | Synonyms: bind, hold, obligate |
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| (verb) provide a service or favor for someone | Synonyms: accommodate |
| (verb) force somebody to do something | Synonyms: compel, obligate |
| obliterate | (verb) remove completely from recognition or memory | Synonyms: efface |
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| (verb) make undecipherable or imperceptible by obscuring or concealing | Synonyms: blot out, hide, obscure, veil |
| (verb) mark for deletion, rub off, or erase | Synonyms: kill, wipe out |
| (verb) do away with completely, without leaving a trace | - |
| obnubilate | (verb) make unclear, indistinct, or blurred | Synonyms: blur, confuse, obscure |
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| (verb) make less visible or unclear | Synonyms: becloud, befog, cloud, fog, haze over, mist, obscure |
| obscure | (verb) make unintelligible or unclear | Synonyms: bedim, overcloud |
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| (verb) make undecipherable or imperceptible by obscuring or concealing | Synonyms: blot out, hide, obliterate, veil |
| (verb) reduce a vowel to a neutral one, such as a schwa | - |
| (verb) make unclear, indistinct, or blurred | Synonyms: blur, confuse, obnubilate |
| (verb) make less visible or unclear | Synonyms: becloud, befog, cloud, fog, haze over, mist, obnubilate |
| observe | (verb) stick to correctly or closely | Synonyms: keep, maintain |
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| (verb) make mention of | Synonyms: mention, note, remark |
| (verb) watch attentively | - |
| (verb) observe with care or pay close attention to | Synonyms: note, take note |
| (verb) discover or determine the existence, presence, or fact of by perception with the eyes | Synonyms: detect, discover, find, notice |
| (verb) follow with the eyes or the mind | Synonyms: follow, keep an eye on, watch, watch over |
| (verb) show respect towards | Synonyms: abide by, honor, honour, respect |
| (verb) behave as expected during of holidays or rites | Synonyms: celebrate, keep |
| (verb) conform one's action or practice to | Synonyms: keep |
| obsess | (verb) haunt like a ghost; pursue | Synonyms: ghost, haunt |
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| (verb) be preoccupied with something | - |
| obsolesce | (verb) become obsolete, fall into disuse | - |
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| obstinate | (verb) persist stubbornly | - |
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| obstipate | (verb) constipate severely | - |
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| obstruct | (verb) block passage through | Synonyms: block, close up, impede, jam, obturate, occlude |
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| (verb) shut out from view or get in the way so as to hide from sight | Synonyms: block |
| (verb) hinder or prevent the progress or accomplishment of | Synonyms: block, blockade, embarrass, hinder, stymie, stymy |
| obtain | (verb) receive a specified treatment (abstract) | Synonyms: find, get, incur, receive |
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| (verb) come into possession of | - |
| (verb) be valid, applicable, or true | Synonyms: hold, prevail |
| obtrude | (verb) thrust oneself in as if by force | Synonyms: intrude |
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| (verb) push to thrust outward | Synonyms: push out, thrust out |
| obtund | (verb) reduce the edge or violence of | - |
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| obturate | (verb) block passage through | Synonyms: block, close up, impede, jam, obstruct, occlude |
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| obviate | (verb) prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off | Synonyms: avert, avoid, debar, deflect, fend off, forefend, forfend, head off, stave off, ward off |
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| (verb) get rid of something | Synonyms: eliminate, rid of |
| occasion | (verb) give occasion to | - |
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| occidentalise | (verb) make western in character | Synonyms: occidentalize, westernise, westernize |
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| occidentalize | (verb) make western in character | Synonyms: occidentalise, westernise, westernize |
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| occlude | (verb) block passage through | Synonyms: block, close up, impede, jam, obstruct, obturate |
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| occult | (verb) hide from view | - |
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| (verb) cause an eclipse of (a celestial body) by intervention | Synonyms: eclipse |
| (verb) become concealed or hidden from view or have its light extinguished | - |
| occupy | (verb) consume all of one's attention or time | Synonyms: absorb, engage, engross |
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| (verb) march aggressively into another's territory by military force for the purposes of conquest and occupation | Synonyms: invade |
| (verb) require (time or space) | Synonyms: take, use up |
| (verb) keep busy with | Synonyms: busy |
| (verb) assume, as of positions or roles | Synonyms: fill, take |
| (verb) live (in a certain place) | Synonyms: lodge in, reside |
| (verb) occupy the whole of | Synonyms: fill |
| (verb) be on the mind of | Synonyms: concern, interest, worry |
| occur | (verb) come to pass | Synonyms: come about, fall out, go on, hap, happen, pass, pass off, take place |
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| (verb) come to one's mind; suggest itself | Synonyms: come |
| (verb) to be found to exist | - |
| odorize | (verb) cause to smell or be smelly | Synonyms: odourise, scent |
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| odourise | (verb) cause to smell or be smelly | Synonyms: odorize, scent |
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| off | (verb) kill intentionally and with premeditation | Synonyms: bump off, dispatch, hit, murder, polish off, remove, slay |
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| offend | (verb) hurt the feelings of | Synonyms: bruise, hurt, injure, spite, wound |
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| (verb) cause to feel resentment or indignation | Synonyms: pique |
| (verb) strike with disgust or revulsion | Synonyms: appal, appall, outrage, scandalise, scandalize, shock |
| (verb) act in disregard of laws, rules, contracts, or promises | Synonyms: breach, break, go against, infract, transgress, violate |
| offer | (verb) put forward for consideration | - |
|---|
| (verb) threaten to do something | - |
| (verb) ask (someone) to marry you | Synonyms: declare oneself, pop the question, propose |
| (verb) produce or introduce on the stage | - |
| (verb) present for acceptance or rejection | Synonyms: proffer |
| (verb) propose a payment | Synonyms: bid, tender |
| (verb) give something useful or necessary to | Synonyms: furnish, provide, render, supply |
| (verb) make available for sale | - |
| (verb) offer verbally | Synonyms: extend |
| (verb) make available; provide | Synonyms: extend |
| (verb) agree freely | Synonyms: volunteer |
| (verb) mount or put up | Synonyms: provide, put up |
| (verb) present as an act of worship | Synonyms: offer up |
| officer | (verb) direct or command as an officer | - |
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| officialise | (verb) make official | Synonyms: officialize |
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| officialize | (verb) make official | Synonyms: officialise |
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| officiate | (verb) perform duties attached to a particular office or place or function | Synonyms: function |
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| (verb) act in an official capacity in a ceremony or religious ritual, such as a wedding | - |
| offload | (verb) remove the load from (a container or vehicle) | Synonyms: unlade, unload |
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| (verb) transfer to a peripheral device, of computer data | - |
| offsaddle | (verb) remove the saddle from | Synonyms: unsaddle |
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| offset | (verb) produce by offset printing | - |
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| (verb) create an offset in | - |
| (verb) cause (printed matter) to transfer or smear onto another surface | - |
| (verb) make up for | Synonyms: cancel, set off |
| (verb) compensate for or counterbalance | Synonyms: countervail |
| ogle | (verb) look at with amorous intentions | Synonyms: perv, perve |
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| oil | (verb) administer an oil or ointment to; often in a religious ceremony of blessing | Synonyms: anele, anoint, embrocate, inunct |
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| (verb) cover with oil, as if by rubbing | - |
| oink | (verb) utter a high-pitched cry, characteristic of pigs | Synonyms: squeal |
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| okay | (verb) give sanction to | Synonyms: approve, O.K., sanction |
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| omen | (verb) indicate, as with a sign or an omen | Synonyms: augur, auspicate, betoken, bode, forecast, foreshadow, foretell, portend, predict, prefigure, presage, prognosticate |
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| omit | (verb) leave undone or leave out | Synonyms: drop, leave out, miss, neglect, overleap, overlook, pretermit |
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| (verb) prevent from being included or considered or accepted | Synonyms: except, exclude, leave off, leave out, take out |
| ooh | (verb) express admiration and pleasure by uttering `ooh' or `aah' | Synonyms: aah |
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| ooze | (verb) release (a liquid) in drops or small quantities | Synonyms: exudate, exude, ooze out, transude |
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| (verb) pass gradually or leak through or as if through small openings | Synonyms: seep |
| opacify | (verb) become opaque | - |
|---|
| (verb) make opaque | - |
| opalesce | (verb) exhibit a play of colors like that of an opal | - |
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| (verb) reflect light or colors like an opal | - |
| opalise | (verb) replace or convert into opal | Synonyms: opalize |
|---|
| (verb) make opalescent | Synonyms: opalize |
| opalize | (verb) replace or convert into opal | Synonyms: opalise |
|---|
| (verb) make opalescent | Synonyms: opalise |
| open | (verb) make available | Synonyms: open up |
|---|
| (verb) become available | Synonyms: open up |
| (verb) make the opening move | - |
| (verb) cause to open or to become open | Synonyms: open up |
| (verb) become open | Synonyms: open up |
| (verb) spread out or open from a closed or folded state | Synonyms: spread, spread out, unfold |
| (verb) display the contents of a file or start an application as on a computer | - |
| (verb) afford access to | Synonyms: afford, give |
| (verb) start to operate or function or cause to start operating or functioning | Synonyms: open up |
| (verb) begin or set in action, of meetings, speeches, recitals, etc. | - |
| (verb) have an opening or passage or outlet | - |
| operate | (verb) perform surgery on | Synonyms: operate on |
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| (verb) perform a movement in military or naval tactics in order to secure an advantage in attack or defense | Synonyms: maneuver, manoeuver, manoeuvre |
| (verb) handle and cause to function | Synonyms: control |
| (verb) keep engaged | Synonyms: engage, lock, mesh |
| (verb) perform as expected when applied | Synonyms: function, go, run, work |
| (verb) direct or control; projects, businesses, etc. | Synonyms: run |
| opine | (verb) expect, believe, or suppose | Synonyms: guess, imagine, reckon, suppose, think |
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| (verb) express one's opinion openly and without fear or hesitation | Synonyms: animadvert, sound off, speak out, speak up |
| oppose | (verb) be resistant to | Synonyms: contradict, controvert |
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| (verb) be against; express opposition to | - |
| (verb) set into opposition or rivalry | Synonyms: match, pit, play off |
| (verb) fight against or resist strongly | Synonyms: defend, fight, fight back, fight down |
| (verb) act against or in opposition to | Synonyms: react |
| (verb) contrast with equal weight or force | Synonyms: counterbalance |
| oppress | (verb) come down on or keep down by unjust use of one's authority | Synonyms: crush, suppress |
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| (verb) cause to suffer | Synonyms: persecute |
| oppugn | (verb) challenge the accuracy, probity, or propriety of | Synonyms: call into question, question |
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| opsonize | (verb) make (cells) more susceptible to the action of phagocytes | - |
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| opt | (verb) select as an alternative over another | Synonyms: choose, prefer |
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| optimise | (verb) act as an optimist and take a sunny view of the world | Synonyms: optimize |
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| (verb) make optimal; get the most out of; use best | Synonyms: optimize |
| (verb) modify to achieve maximum efficiency in storage capacity or time or cost | Synonyms: optimize |
| optimize | (verb) act as an optimist and take a sunny view of the world | Synonyms: optimise |
|---|
| (verb) make optimal; get the most out of; use best | Synonyms: optimise |
| (verb) modify to achieve maximum efficiency in storage capacity or time or cost | Synonyms: optimise |
| orate | (verb) talk pompously | - |
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| orb | (verb) move in an orbit | Synonyms: orbit, revolve |
|---|
| orbit | (verb) move in an orbit | Synonyms: orb, revolve |
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| orchestrate | (verb) plan and direct (a complex undertaking) | Synonyms: direct, engineer, mastermind, organise, organize |
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| (verb) write an orchestra score for | - |
| ordain | (verb) issue an order | - |
|---|
| (verb) appoint to a clerical posts | Synonyms: consecrate, order, ordinate |
| (verb) order by virtue of superior authority; decree | Synonyms: enact |
| (verb) invest with ministerial or priestly authority | - |
| order | (verb) bring order to or into | - |
|---|
| (verb) place in a certain order | - |
| (verb) assign a rank or rating to | Synonyms: grade, place, range, rank, rate |
| (verb) arrange thoughts, ideas, temporal events | Synonyms: arrange, put, set up |
| (verb) make a request for something | - |
| (verb) give instructions to or direct somebody to do something with authority | Synonyms: enjoin, say, tell |
| (verb) issue commands or orders for | Synonyms: dictate, prescribe |
| (verb) bring into conformity with rules or principles or usage; impose regulations | Synonyms: govern, regularise, regularize, regulate |
| (verb) appoint to a clerical posts | Synonyms: consecrate, ordain, ordinate |
| ordinate | (verb) bring (components or parts) into proper or desirable coordination correlation | Synonyms: align, coordinate |
|---|
| (verb) appoint to a clerical posts | Synonyms: consecrate, ordain, order |
| organise | (verb) bring order and organization to | Synonyms: coordinate, organize |
|---|
| (verb) plan and direct (a complex undertaking) | Synonyms: direct, engineer, mastermind, orchestrate, organize |
| (verb) arrange by systematic planning and united effort | Synonyms: devise, get up, machinate, organize, prepare |
| (verb) cause to be structured or ordered or operating according to some principle or idea | Synonyms: organize |
| (verb) create (as an entity) | Synonyms: form, organize |
| (verb) form or join a union | Synonyms: organize, unionise, unionize |
| organize | (verb) bring order and organization to | Synonyms: coordinate, organise |
|---|
| (verb) plan and direct (a complex undertaking) | Synonyms: direct, engineer, mastermind, orchestrate, organise |
| (verb) arrange by systematic planning and united effort | Synonyms: devise, get up, machinate, organise, prepare |
| (verb) cause to be structured or ordered or operating according to some principle or idea | Synonyms: organise |
| (verb) create (as an entity) | Synonyms: form, organise |
| (verb) form or join a union | Synonyms: organise, unionise, unionize |
| orient | (verb) adjust to a specific need or market | Synonyms: tailor |
|---|
| (verb) familiarize (someone) with new surroundings or circumstances | - |
| (verb) determine one's position with reference to another point | Synonyms: orientate |
| (verb) be oriented | Synonyms: point |
| (verb) cause to point | - |
| orientalise | (verb) make oriental in character | Synonyms: orientalize |
|---|
| orientalize | (verb) make oriental in character | Synonyms: orientalise |
|---|
| orientate | (verb) determine one's position with reference to another point | Synonyms: orient |
|---|
| originate | (verb) bring into being | Synonyms: initiate, start |
|---|
| (verb) come into existence; take on form or shape | Synonyms: arise, develop, grow, rise, spring up, uprise |
| (verb) begin a trip at a certain point, as of a plane, train, bus, etc. | - |
| ornament | (verb) make more attractive by adding ornament, colour, etc. | Synonyms: adorn, beautify, decorate, embellish, grace |
|---|
| (verb) be an ornament to | - |
| orphan | (verb) deprive of parents | - |
|---|
| oscillate | (verb) move or swing from side to side regularly | Synonyms: vibrate |
|---|
| (verb) be undecided about something; waver between conflicting positions or courses of action | Synonyms: hover, vacillate, vibrate |
| osculate | (verb) touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc. | Synonyms: buss, kiss, snog |
|---|
| (verb) have at least three points in common with | - |
| (verb) be intermediate between two taxonomic groups | - |
| ossify | (verb) become bony | - |
|---|
| (verb) cause to become hard and bony | - |
| (verb) make rigid and set into a conventional pattern | Synonyms: petrify, rigidify |
| ostentate | (verb) display proudly; act ostentatiously or pretentiously | Synonyms: flash, flaunt, show off, swank |
|---|
| ostracise | (verb) avoid speaking to or dealing with | Synonyms: ostracize |
|---|
| (verb) expel from a community or group | Synonyms: ban, banish, blackball, cast out, ostracize, shun |
| ostracize | (verb) avoid speaking to or dealing with | Synonyms: ostracise |
|---|
| (verb) expel from a community or group | Synonyms: ban, banish, blackball, cast out, ostracise, shun |
| oust | (verb) remove from a position or office | Synonyms: boot out, drum out, expel, kick out, throw out |
|---|
| (verb) remove and replace | - |
| out | (verb) be made known; be disclosed or revealed | Synonyms: come out |
|---|
| (verb) reveal (something) about somebody's identity or lifestyle | - |
| (verb) to state openly and publicly one's homosexuality | Synonyms: come out, come out of the closet |
| outbalance | (verb) weigh more heavily | Synonyms: outweigh, overbalance, preponderate |
|---|
| outbid | (verb) bid higher than others | - |
|---|
| (verb) bid over an opponent's bid when one's partner has not bid or doubled | - |
| outbrave | (verb) be braver than | - |
|---|
| (verb) resist bravely | - |
| outcall | (verb) make a higher bid than (the previous bid or player); in a card game | - |
|---|
| outclass | (verb) cause to appear in a lower class | - |
|---|
| outcrop | (verb) appear on the surface, come to the surface on the ground | - |
|---|
| outcry | (verb) utter aloud; often with surprise, horror, or joy | Synonyms: call out, cry, cry out, exclaim, shout |
|---|
| (verb) shout louder than | Synonyms: outshout |
| outdistance | (verb) go far ahead of | Synonyms: distance, outstrip |
|---|
| outdo | (verb) be or do something to a greater degree | Synonyms: exceed, outgo, outmatch, outperform, outstrip, surmount, surpass |
|---|
| (verb) get the better of | Synonyms: best, outflank, scoop, trump |
| outdraw | (verb) draw a gun faster, or best someone in a gunfight | - |
|---|
| outface | (verb) overcome or cause to waver or submit by (or as if by) staring | Synonyms: outstare, stare down |
|---|
| outfight | (verb) to fight better than; get the better of | - |
|---|
| outfit | (verb) provide with (something) usually for a specific purpose | Synonyms: equip, fit, fit out |
|---|
| outflank | (verb) get the better of | Synonyms: best, outdo, scoop, trump |
|---|
| (verb) go around the flank of (an opposing army) | Synonyms: go around |