| Main Entry: | |
| Part of Speech: | verb |
| Definition: | make unnecessary |
| Synonyms: | anticipate, avert, block, counter, counteract, deter, do away with, forestall, forfend, hinder, interfere, interpose, intervene, preclude, prevent, remove, restrain, rule out, stave off, ward |
| Antonyms: | allow, help, permit |
| Main Entry: | check |
| Part of Speech: | verb |
| Definition: | hinder, restrain |
| Synonyms: | arrest, baffle, bar, bit, bottleneck, bridle, checkmate, choke, circumvent, constrain, control, counteract, curb, cut short, delay, discourage, foil, frustrate, halt, harness, hold, hold back, hold down, hold in, impede, inhibit, interrupt, keep back, limit, moderate, neutralize, nip in the bud, obstruct, obviate, pause, play for time, preclude, prevent, rebuff, reduce, rein in, repress, repulse, retard, slacken pace, slow down, snub, squelch, stay, stop, suppress, tame, terminate, thwart, withhold |
| Antonyms: | aid, allow, assist, expedite, help, indulge, liberate, permit |
| Main Entry: | deter |
| Part of Speech: | verb |
| Definition: | check, inhibit from action |
| Synonyms: | act like a wet blanket, avert, block, caution, chill, cool, damp, dampen, daunt, debar, disadvise, discourage, dissuade, divert, forestall, forfend, frighten, hinder, impede, intimidate, obstruct, obviate, preclude, prevent, prohibit, put a damper on, put off, restrain, rule out, scare, shut out, stave off, stop, talk out of, throw cold water on, turn off, warn |
| Antonyms: | encourage, instigate, persuade, promote, put on to, stimulate, support, turn on, urge |
| Main Entry: | exclude |
| Part of Speech: | verb |
| Definition: | expel, forbid |
| Synonyms: | ban, bar, bate, blackball, blacklist, block, bounce, boycott, close out, count out, debar, disallow, drive out, eject, eliminate, embargo, estop, evict, except, force out, get rid of, ignore, interdict, keep out, leave out, lock out, obviate, occlude, omit, ostracize, oust, pass over, preclude, prevent, prohibit, proscribe, put out, refuse, refuse admittance, reject, remove, repudiate, rule out, set aside, shut out, shut the door on, sideline, suspend, throw out, veto, ward off |
| Antonyms: | accept, add, admit, allow, include, incorporate, take on, welcome |
| Main Entry: | forbid |
| Part of Speech: | verb |
| Definition: | outlaw, prohibit an action |
| Synonyms: | ban, block, cancel, censor, check, debar, declare illegal, deny, deprive, disallow, embargo, enjoin, exclude, forestall, forfend, freeze*, halt, hinder, hold up, impede, inhibit, interdict, lock up, nix, obstruct, obviate, oppose, preclude, prevent, proscribe, put the chill on, restrain, restrict, rule out, say no, shut down, shut out, spike*, stop, stymie*, taboo*, veto, withhold |
| Antonyms: | allow, approve, authorize, permit, sanction |
| Main Entry: | frustrate |
| Part of Speech: | verb |
| Definition: | thwart, disappoint |
| Synonyms: | annul, arrest, baffle, balk, bar, beat, block, cancel, check, circumvent, confront, conquer, counter, counteract, cramp, cramp one's style, crimp, dash, dash one's hope, defeat, depress, discourage, dishearten, foil, forbid, forestall, foul up, give the run around, halt, hang up, hinder, hold up, impede, inhibit, lick, negate, neutralize, nullify, obstruct, obviate, outwit, overcome, preclude, prevent, prohibit, render null and void, ruin, stump, stymie*, upset the applecart |
| Antonyms: | aid, assist, cooperate, encourage, facilitate, help, support |
| Main Entry: | preclude |
| Part of Speech: | verb |
| Definition: | inhibit; make impossible |
| Synonyms: | avert, cease, check, debar, deter, discontinue, exclude, forestall, forfend, hinder, impede, interrupt, make impracticable, obviate, prevent, prohibit, put a stop to, quit, restrain, rule out, stave off, stop, ward |
| Antonyms: | allow, permit, support |
| Main Entry: | prevent |
| Part of Speech: | verb |
| Definition: | keep from happening or continuing |
| Synonyms: | anticipate, arrest, avert, avoid, baffle, balk, bar, block, check, chill*, cool, cork, counter, counteract, dam, debar, defend against, foil, forbid, forestall, forfend, frustrate, halt, hamper, head off, hinder, hold back, hold off, impede, inhibit, intercept, interdict, interrupt, keep lid on, limit, nip in the bud, obstruct, obviate, preclude, prohibit, put a stop to, put an end to, repress, restrain, restrict, retard, rule out, shut out, stave off, stop, thwart, turn aside, ward off |
| Antonyms: | aid, allow, assist, cause, help, let go |
| Main Entry: | rule out |
| Part of Speech: | verb |
| Definition: | exclude, reject |
| Synonyms: | abolish, avert, ban, bate, cancel, count out, debar, deter, dismiss, eliminate, except, forbid, forestall, forfend, leave out, not consider, obviate, preclude, prevent, prohibit, proscribe, recant, revoke, stave off, suspend, ward off |
| Antonyms: | add, include, keep |