Thesaurus — Synonyms & Antonyms

opposition

resistance, disagreement, defiance, hostility, objection

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oppressed

downtrodden, subjugated, persecuted, tyrannized, enslaved

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oppression

subjugation, persecution, tyranny, injustice

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oppressive

harsh

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ops

operations, logistics

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opt

choose, select, elect, decide, pick

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optic

visual, ocular

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optical

visual, ocular, optic, ophthalmic

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optics

perception, image, appearance

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optimal

ideal, optimum, best, peak, prime

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optimism

positivity, hopefulness, buoyancy, sanguinity, cheerfulness

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optimistic

hopeful, positive, upbeat, sanguine, buoyant

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optimization

refinement, streamlining, fine-tuning, enhancement

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optimum

ideal, best, peak, sweet spot, pessimum

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option

selection, pick, preference, alternative, choice

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optional

voluntary, elective, discretionary, non-compulsory, unforced

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or

otherwise, or else, alternatively

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oracle

ariolater, Chaldean, clairvoyant, divinator, diviner

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oral

spoken, verbal, vocal, unwritten, uttered

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orange

amber, coral, ginger, gold, golden brown

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orator

speaker

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orb

globe

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orbit

circle, revolve, circuit, trajectory, revolution

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orbital

circumferential, ring, peripheral

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orchard

grove, plantation

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orchestra

ensemble, philharmonic, symphony

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orchid

orchidea

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order

arrangement, sequence, organization, layout, structure

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ordered

organised, orderly, tidy, neat, systematic

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ordering

arrangement, sequencing, sorting, ranking

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orderly

trim, well-kept, all Sir Garnet, Bristol fashion and shipshape, in order

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ordinarily

commonly, most of the time, routinely

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ordinary

normal, usual, common, everyday, standard

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ore

lode, mineral deposit, vein, deposit

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organ

pipe organ, harmonium, viscus

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organic

natural, living, biological, carbon-based, plant-based

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organisation

body, institution, association, arrangement, structure

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organism

creature, life form, entity, being, biont

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organization

institution, body, association, group, company

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organizational

structural, administrative, managerial

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organize

structure, adapt, adjust, apportion, arrange

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organized

orderly, methodical, systematic, tidy, structured

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organizer

coordinator, planner, arranger, chief, controller

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organizing

arranging, coordinating, ordering, structuring, planning

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orgasm

consummation, gratification, acme, big O, completion

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Oriental

eastern

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oriented

focused, geared, directed, centered, aligned

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origin

source, beginning, root, start, foundation

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original

authentic, genuine, first, initial, earliest

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originally

at first, in the beginning, to begin with, formerly, initially

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originate

initiate, take shape

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ornery

stubborn, cantankerous, cranky, irritable, contrary

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orphan

parentless child, waif, foundling

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orthodox

established, accepted, mainstream, standard, canonical

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orthodoxy

homodoxy

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os

esker, orifice, opening, bone, ridge

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Oscar

academy award, statuette, gong

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osprey

fish eagle, fish hawk, orfray, ossifrage, osspringer

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other

different, alternative, additional, remaining, further

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others

other people, the rest, everyone else, the remainder, the others

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otherwise

differently, in another way, or else, in other respects, if not

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Ottawa

odawa, National Capital Region, NCR, Ottawa-Hull, Ottawa-Gatineau

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ottoman

footstool, hassock, pouf

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ou

guy, bloke

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ouch

ow, yikes, oof

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ought

should, must, need to

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ounce

oz., fl. oz.

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ourselves

usself, weself

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out

outside, outdoors, forth, extinguished, absent

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outbreak

eruption, flare-up, upsurge, epidemic, spate

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outcast

abject, castaway, deviant, exile, fremd

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outcome

result, consequence, upshot, effect, aftermath

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outdated

obsolete, antiquated, dated, old-fashioned, stale

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outdoor

open-air, outside, alfresco, exterior, external

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outdoors

open air, nature, great outdoors

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outer

external, exterior, outside, outermost, outward

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outfit

ensemble, getup, attire, garb, organization

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outgoing

sociable, extroverted, departing, retiring, expenditures

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outhouse

backhouse, backside, bog, boggard, boghouse

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outlet

socket, receptacle, vent, channel, release

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outline

silhouette, contour, synopsis, rundown, framework

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outlined

sketched, summarized, delineated, bordered, defined

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outlook

attitude, perspective, viewpoint, forecast, prognosis

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outlying

far

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output

production, yield, productivity, product, throughput

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outrage

indignation, fury, scandal

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outrageous

scandalous, exorbitant, flamboyant, extravagant, unreasonable

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outrank

rank

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outreach

engagement, canvassing, networking

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outright

unconditional, unequivocal, categorical, clean, unreserved

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outside

exterior, outer surface, surface, face, outer side

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outsider

stranger, non-member, long shot, underdog

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outsiders

strangers, non-members

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outskirts

edges, periphery, fringes, environs

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outstanding

excellent, exceptional, superb, remarkable, first-rate

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outward

outwards

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outwardly

superficially, to all appearances

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outwards

outward

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oval

oviform, elliptic, ovular, ovoid, ovate

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ovary

ovarium

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oven

stove, cooker, range, kiln, roaster

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over

finished, ended, done, concluded, complete

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overall

general, total, aggregate, comprehensive, all-inclusive

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overcome

conquer, surmount, prevail over, master, beat

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overcoming

conquering, defeating, surmounting, triumphing over, mastering

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overcooked

overdone

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overdose

od

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overdressed

overclothed

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overhaul

revamp, renovation, refurbishment, restructuring, reconditioning

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overhead

running costs, operating expenses, outgoings, fixed costs, aerial

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overlap

intersect, coincide, converge, superimpose, correspond

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overlapping

coinciding, intersecting, superimposed

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overlooked

disregarded, unnoticed, neglected, missed, underrated

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overly

excessively, unduly, inordinately, unreasonably

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overnight

suddenly, instantly, abruptly, rapidly, quickly

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overpass

surpass, transgress, miss, overlook, take no notice of

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overseas

abroad, foreign, international, external, offshore

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overseer

administrator, chief, comptroller, controller, curator

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oversight

omission, slip, supervision, monitoring, governance

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overtaken

drunk

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overthrow

coup, ousting, deposition, toppling, revolt

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overtime

extra time, extra hours, additional hours

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overview

summary, synopsis, outline, rundown, survey

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overweight

stout, ample, beer-bellied, big, bulky

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overwhelm

grip, ravish

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overwhelmed

overcome, swamped, inundated, overloaded, snowed under

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overwhelming

overpowering, crushing, staggering, breathtaking, formidable

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overwhelmingly

vastly, predominantly, overpoweringly, resoundingly, decisively

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ow

ouch, yow, argh

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owe

be indebted, be in debt, be beholden

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owed

outstanding, payable, overdue

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owing

outstanding, unpaid, payable

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owl

raptor, bird of prey, night bird, sage

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own

personal, individual, private

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owned

possessed, held, belonging to, in one's possession

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owner

proprietor, possessor, holder, keeper, landlord

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ownership

title, control, holding, owndom, possession

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oyster

bivalve, mollusk, shellfish

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Oz

down under

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