THESAURUS
disaffirm
abjure, assert the contrary, belie, contest, contradict, contravene, controvert, counter, cross, deny, disallow, disavow, disclaim, disown, disprove, dispute, forswear, gainsay, impugn, join issue upon, negate, negative, not accept, not admit, nullify, oppose, recant, refuse to admit, refute, renounce, repudiate, retract, revoke, take back, take issue with, traverse
ROGET THESAURUS
disaffirm
Negation
VB
deny, contradict, contravene, controvert, give denial to, gainsay, negative, shake the head, disown,
disaffirm, disclaim, disavow, recant, revoke, dispute, impugn, traverse, rebut, join issue upon, bring in question, call in question, give the lie in his throat, give one the lie in his throat, deny flatly, deny peremptorily, deny emphatically, deny absolutely, deny wholly, deny entirely, give the lie to, belie, repudiate, set aside, ignore, rebut, qualify, refuse, recuse.