To refuse to accept as true or right; reject as unfounded, unreal, etc.
To deny the truth of (a charge, etc.)
(Intransitive) To not agree (suit).
To argue; debate
To be or act in contention or conflict with:
To speak in denial; oppose verbally
To attack as false or questionable; challenge in argument:
To oppose actively; fight, argue, or work against
To accept or support a policy or program:
Regarding a decision of a court or court panel that has more than one judge, to agree with the opinion of another judge, but not necessarily for all the same reasons or for a different reason altogether. See also dissent.
To make firmer; strengthen:
To be inconsistent with; be contrary to:
(Law) To refuse to abide by (a contract, agreement, etc.); repudiate
To declare support for or belief in:
Challenge means to stop someone and ask for their identification.
Find another word for gainsay. In this page you can discover 26 synonyms, antonyms, idiomatic expressions, and related words for gainsay, like: deny, disclaim, refute, repudiate, disagree, dispute, controvert, oppose, contradict, impugn and negate.