undo(redirected from undoer)
Also found in: Dictionary, Thesaurus, Encyclopedia.
undoverb abolish, abrogate, annul, answer, cancel, counteract, counterbalance, countermand, debug, decode, decrypt, defeat, destroy, disestablish, declare null and void, dispense with, eliminate, impeach, invalidate, neutralize, nullify, obviate, offset, put an end to, quash, ravel, remove, repeal, rescind, resolve, retract, reverse, revoke, ruin, thwart, unravel, untangle, untwist, unweave, vitiate, worst
Associated concepts: undo charges, undo the law
See also: abolish, abrogate, annul, beat, betray, counteract, defeat, denude, disengage, disorganize, disown, dissociate, dissolve, frustrate, invalidate, liberate, overreach, overrule, part, separate, subvert, terminate, upset, vitiate