to assert the contrary or opposite of; deny directly and categorically.

to speak contrary to the assertions of

to contradict oneself.

(of an action or event) to imply a denial of

His way of life contradicts his stated principles.

Obsolete . to speak or declare against; oppose.

to utter a contrary statement.

verb

accept , agree , approve , concede , confirm , corroborate , ok , reconcile , sign , verify , vouch

verb

belie , buck , call in question , challenge , confront , contravene , controvert , counter , counteract , cross , dare , deny , differ , disaffirm , disclaim , disprove , dispute , fly in the face of , gainsay , have bone to pick , impugn , negate , negative , oppose , refuse to accept , repudiate , take on , thumbs down , traverse , oppugn , clash , disaccord , discord , jar , call into question , rebut , refute