Synonyms and related words :
abjure, assert the contrary, back down, back out, backwater, belie, climb down, contest, contradict, contravene, controvert, counter, crawfish out, cross, deny, disaffirm, disallow, disclaim, disown, disprove, dispute, eat crow, eat humble pie, forswear, gainsay, impugn, join issue upon, negate, negative, not accept, not admit, nullify, oppose, recant, refuse to admit, refute, renege, renounce, repudiate, retract, revoke, swallow, take back, take issue with, unsay, withdraw