Synonyms for undo
verb
To unfasten
untie, loosen, release; see unhitch.
To bring to ruin
mar, destroy, ruin, wreck, break, bring to naught, subvert, injure, overthrow, unsettle, turn topsy-turvy, upset, defeat.
To reverse
annul, cancel, do away with, invalidate; see cancel 2.
See undo in Webster's New World Roget's A-Z Thesaurus II
verb
To remove or invalidate by or as if by running a line through or wiping clean:
annul, blot (out), cancel, cross (off or out), delete, efface, erase, expunge, obliterate, rub (out), scratch (out), strike (out), wipe (out), x (out). (Law) vacate. See continueTo free from ties or fasteners:
disengage, loose, loosen, slip, unbind, unclasp, unfasten, unloose, unloosen, untie. See tightenTo become or cause to become open:
open, unclose. See openTo cause the complete ruin or wreckage of:
bankrupt, break down, cross up, demolish, destroy, finish, ruin, shatter, sink, smash, spoil, torpedo, wash up, wrack2, wreck. (Slang) total. Idiom: put the kibosh on. See helpTo lessen or deplete the nerve, energy, or strength of:
attenuate, debilitate, devitalize, enervate, enfeeble, sap2, undermine, unnerve, weaken. See strongTo lure or persuade into a sexual relationship or a sexual act:
debauch, seduce. See sex
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