abjuration, abjurement, abrogation, absolute contradiction, annulment, contradiction, contrary assertion, contravention, controversion, countering, crossing, denial, disaffirmation, disallowance, disavowal, disclaimer, disclamation, disownment, forswearing, gainsaying, impugnment, nullification, recantation, refutation, renunciation, repudiation, retractation, retraction, revocation
counter evidence, evidence on the other side, evidence on the other hand, conflicting evidence, contradictory evidence, opposing evidence, disproof
, refutation, negation, plea, vindication, counter protest, 'tu quoque' argument, other side of the shield, other side of the coin, reverse of the shield, countervailing, contradictory, unattested, unauthenticated, unsupported by evidence, supposititious, on the contrary, per contra.
confutation, refutation, answer, complete answer, disproof
, conviction, redargution, invalidation, exposure, exposition, clincher, retort, reductio ad absurdum, knock down argument, tu quoque argument, sockdolager, correction, dissuasion, confuting, confuted capable of refutation, refutable, confutable, defeasible, contravene (counter evidence), condemned on one's own showing, condemned out of one's own mouth, the argument falls to the ground, cadit quaestio, it does not hold water, suo sibi gladio hunc jugulo, his argument was demolished by new evidence.