Disaffirm

v. t.	1.	To assert the contrary of; to contradict; to deny; - said of that which has been asserted.
	2.	(Law) To refuse to confirm; to annul, as a judicial decision, by a contrary judgment of a superior tribunal.

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