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undo - 20 thesaurus results
| Main Entry: | undo |
| Part of Speech: | verb |
| Definition: | open |
| Synonyms: | disengage, disentangle, free, loose, loosen, release, unbutton, unfasten, unlock, unravel, untie, unwrap, unbind, unblock, unclose, unfix, unloose, unloosen, unshut, unstop |
| Notes: | undo means to reverse an action or thing; undue means 'inappropriate' or 'excessive' |
| Antonyms: | close, do, fasten |
| Main Entry: | undo |
| Part of Speech: | verb |
| Definition: | nullify, invalidate |
| Synonyms: | abate, abolish, abrogate, annihilate, annul, break, bring down, cancel, cramp*, craze, crimp*, decimate, defeat, demolish, destroy, have*, impoverish, injure, mar, negate, neutralize, offset, outfox, outmaneuver, overreach, overthrow, overturn, quash, queer*, raze, reverse, ruin, screw up*, shatter, skin*, smash, spoil, stymie*, subvert, undermine, unsettle, upset, vitiate, wipe out*, wrack, wreck, bring to naught, make waves, outsmart, unbuild |
| Antonyms: | approve, permit, validate |
* = informal/non-formal usage
| Main Entry: | abolish |
| Part of Speech: | verb |
| Definition: | do away with or put an end to |
| Synonyms: | abate, abrogate, annihilate, annul, call off, cancel, destroy, dissolve, end, eradicate, erase, expunge, extinguish, extirpate, finish, inhibit, invalidate, kill, negate, nix, nullify, obliterate, overthrow, overturn, prohibit, quash, repeal, repudiate, rescind, revoke, scrub*, squelch, stamp out, subvert, supersede, suppress, terminate, undo, vacate, vitiate, void, wipe out, zap*, disestablish, put an end to, put kibosh on, put the kibosh on, set aside |
| Antonyms: | confirm, continue, enact, establish, institute, legalize, promote, ratify, support, uphold |
* = informal/non-formal usage
| Main Entry: | abrogate |
| Part of Speech: | verb |
| Definition: | formally put an end to |
| Synonyms: | abate, abolish, annul, cancel, dissolve, do in*, end, invalidate, knock out*, negate, nix, nullify, quash, reject, renege, repeal, retract, revoke, scrub*, undo, vacate, vitiate, void, finish off*, torpedo* |
| Antonyms: | approve, establish, fix, institute, legalize, ratify, sanction, support |
* = informal/non-formal usage
| Main Entry: | annihilate |
| Part of Speech: | verb |
| Definition: | destroy completely |
| Synonyms: | abate, abolish, abrogate, annul, crush*, decimate, demolish, do in*, eradicate, erase, expunge, exterminate, extinguish, extirpate, invalidate, liquidate, massacre, murder, negate, nullify, obliterate, quash, quell, raze, rub out*, ruin, slaughter, undo, vitiate, wipe out*, wrack*, wreck, blot out*, finish off, root out*, take out* |
| Antonyms: | help, preserve, revive, save |
* = informal/non-formal usage
| Main Entry: | annul |
| Part of Speech: | verb |
| Definition: | void an agreement |
| Synonyms: | abate, abolish, abrogate, annihilate, call off, cancel, countermand, declare, delete, discharge, dissolve, efface, erase, expunge, invalidate, kill, negate, neutralize, nix, nullify, obliterate, quash, recall, repeal, rescind, retract, reverse, revoke, scrub*, undo, vacate, vitiate, wipe out*, blot out, get off the hook, render null and void |
| Antonyms: | keep, restore, retain, validate, revalidate |
* = informal/non-formal usage
| Main Entry: | demolish |
| Part of Speech: | verb |
| Definition: | destroy; consume |
| Synonyms: | annihilate, break, bulldoze, burst, crack, crush, decimate, defeat, devastate, devour, dismantle, eat, flatten, level, obliterate, overthrow, overturn, pulverize, put away, raze, ruin, sink, smash, tear down, total*, trash*, undo, wax*, wrack, wreck, dilapidate, gobble up, knock down, put in toilet, take apart, take out, torpedo*, wipe off map |
| Antonyms: | build, construct, fix, produce, rebuild, repair, restore |
* = informal/non-formal usage
| Main Entry: | disconcert |
| Part of Speech: | verb |
| Definition: | shake up; confuse |
| Synonyms: | abash, agitate, baffle, balk, bewilder, bug, confound, demoralize, disarrange, discomfit, discompose, discountenance, disturb, embarrass, faze, fluster, foul up, frustrate, hinder, nonplus, perplex, perturb, put off, puzzle, rattle, ruffle, trouble, unbalance, undo, unsettle, upset, worry, discombobulate, get to, psych out, take aback, throw off balance, upset apple cart |
| Antonyms: | calm, comfort, soothe |
| Main Entry: | disengage |
| Part of Speech: | verb |
| Definition: | free from connection |
| Synonyms: | abstract, back off, back out, cut loose, cut out, detach, disassociate, disconnect, disentangle, disjoin, dissociate, disunite, divide, drop out, ease, extricate, liberate, loose, loosen, opt out, release, separate, undo, unfasten, untie, withdraw, pull the plug, set free, unbind, uncouple, unfix, unloose, weasel out |
| Antonyms: | attach, bind, connect, engage, fasten, join, unite |
| Main Entry: | disentangle |
| Part of Speech: | verb |
| Definition: | unwind, disconnect; solve |
| Synonyms: | clear up, detach, disencumber, disengage, emancipate, expand, extricate, free, let off, loose, open, part, resolve, separate, sever, simplify, sunder, undo, unfold, unravel, untangle, untie, work out, bail one out, discumber, disembroil, disinvolve, let go, sort out, unbraid, unscramble, unsnarl, untwine, untwist |
| Antonyms: | entangle, entwine, twist, wind |
| Main Entry: | dismantle |
| Part of Speech: | verb |
| Definition: | take apart |
| Synonyms: | annihilate, bankrupt, bare, break up, decimate, demolish, denude, deprive, destroy, disassemble, dismember, dismount, disrobe, divest, fell, level, pull down, raze, ruin, strike, strip, subvert, take down, tear down, undo, wrack, wreck, break down, denudate, knock down, part out, take to pieces, unrig |
| Antonyms: | assemble, build, combine, construct, put together, raise |
| Main Entry: | invalidate |
| Part of Speech: | verb |
| Definition: | render null and void |
| Synonyms: | abate, abolish, abrogate, annihilate, annul, cancel, counteract, counterbalance, discredit, disqualify, impair, negate, negative, neutralize, nix, nullify, offset, overrule, overthrow, quash, refute, revoke, undermine, undo, unfit, weaken, X-out, blow sky-high, circumduct, disannul, shoot full of holes |
| Antonyms: | approve, permit, validate |
| Main Entry: | loose/loosen |
| Part of Speech: | verb |
| Definition: | set free; unbind |
| Synonyms: | alleviate, break up, deliver, detach, discharge, disconnect, disengage, disjoin, ease, emancipate, extricate, free, liberate, mitigate, relax, release, separate, slacken, unbuckle, unbutton, undo, unfasten, unhitch, unleash, unlock, untie, become unfastened, disenthrall, ease off, let go, let out, manumit, unbar, unbolt, unchain, unclasp, unfix, unhook, unlace, unlash, unlatch, unloose, unpin, unscrew, unsnap, unstick, unstrap, untighten, work free, work loose |
| Antonyms: | bind, limit, restrict, tighten |
| Main Entry: | negate |
| Part of Speech: | verb |
| Definition: | contradict, countermand |
| Synonyms: | abate, abolish, abrogate, annihilate, annul, belie, blackball*, break with*, cancel, controvert, cross*, deny, ding*, disaffirm, disallow, disprove, dump*, frustrate, gainsay, impugn, invalidate, kill, negative, neutralize, nullify, oppose, put down, quash*, rebut, redress, refute, repeal, rescind, retract, reverse, revoke, stonewall*, traverse, turn down, undo, vitiate, void, cancel out, countercheck, fly in the face of, turn thumbs down |
| Antonyms: | allow, approve, permit |
* = informal/non-formal usage
| Main Entry: | neutralize |
| Part of Speech: | verb |
| Definition: | counteract |
| Synonyms: | abrogate, annul, balance, cancel, conquer, counterbalance, counterpoise, defeat, frustrate, invalidate, negate, negative, nullify, offset, overcome, override, overrule, redress, subdue, undo, compensate for, countercheck, countervail |
| Main Entry: | nullify |
| Part of Speech: | verb |
| Definition: | cancel, revoke |
| Synonyms: | abate, abolish, abrogate, annihilate, annul, ax, compensate, confine, counteract, counterbalance, invalidate, kill*, limit, negate, neutralize, offset, quash*, renege, repeal, rescind, restrict, scratch*, scrub*, squash*, stamp out*, trash*, undo, veto, vitiate, void, wipe out*, zap*, blue pencil, bring to naught, call all bets off, countervail, disannul, forget it, nig, render null and void, renig, take out*, torpedo*, wash out* |
| Antonyms: | affirm, pass, sanctify, validate |
* = informal/non-formal usage
| Main Entry: | raze |
| Part of Speech: | verb |
| Definition: | flatten, knock down; wipe out |
| Synonyms: | batter, bomb, bulldoze, capsize, crash, decimate, delete, demolish, destroy, dynamite, efface, erase, expunge, extinguish, extirpate, fell, level, obliterate, overthrow, overturn, pull down, reduce, remove, rub out*, ruin, scatter, smash, spill, strike out, subvert, tear down, topple, total, undo, upset, wipe out, wrack, wreck, zap*, blow down, break down, cast down, mow down, scratch out, tear up, throw down, unbuild, unmake |
| Antonyms: | build, construct |
* = informal/non-formal usage
| Main Entry: | release |
| Part of Speech: | verb |
| Definition: | let go, let out |
| Synonyms: | absolve, acquit, bail out, clear, commute, deliver, discharge, disengage, dispense, drop, emancipate, exculpate, excuse, exempt, exonerate, extricate, free, give off, issue, leak, let off, liberate, loose, loosen, spring, surrender, turn out, undo, unfasten, unleash, untie, vent, yield, cast loose, give out, go easy on, let off steam, let up on, manumit, open up, set at large, set free, set loose, take out, turn loose, unbind, unchain, unfetter, unloose, unshackle, wipe slate clean |
| Antonyms: | collect, gather, hold, keep, maintain |
| Main Entry: | split up |
| Part of Speech: | verb |
| Definition: | keep apart; segregate; separate |
| Synonyms: | break off, break up, detach, disband, disconnect, divide, divorce, group, part, seclude, sever, sort, undo, come apart, go separate ways, part company, rope off, stand between |
| Main Entry: | sunder |
| Part of Speech: | verb |
| Definition: | separate, sever |
| Synonyms: | break, break off, detach, disconnect, disjoin, divide, part, rend, slice, split, split up, undo, break apart, come apart, cut in two, uncouple, wedge apart |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2009 by the Philip Lief Group.
Cite This Source
Copyright © 2009 by the Philip Lief Group.
Cite This Source
Copyright © 2009, Dictionary.com, LLC. All rights reserved.
