verb
to make inoperative or ineffective usually by means of an opposite force, influence, or effect
attacked by the kind of propaganda that is difficult to neutralize
Synonyms: annul, cancel (out), counteract, countercheck, frustrate, negate, negative, redress
Related Word: balance, compensate, counterbalance, counterpoise, countervail, offset; abrogate, invalidate, nullify; conquer, defeat, overcome, subdue; override, overrule
Contrasted words: activate, animate, dynamize, vitalize