gainsay

n. denial; refusal; objection

v. deny; dispute, contradict

Verb
1. take exception to; "She challenged his claims"
(synonym) challenge, dispute
(hypernym) contest, contend, repugn
(hyponym) call
(entail) question, oppugn, call into question

(v. t.)
To contradict; to deny; to controvert; to dispute; to forbid.
  

v. a.
انکار کرنا, نہيں کرنا, بات کاٹنا, خلاف کہنا, رد کرنا, حجت کرنا, جرح کرنا

Synonyms and related words:
abjure, assert the contrary, be contrary to, belie, call into question, challenge, combat, contest, contradict, contravene, controvert, counter, cross, deny, disaffirm, disallow, disavow, disclaim, disown, disprove, dispute, fight, forswear, impugn, join issue upon, negate, negative, not accept, not admit, nullify, oppose, oppugn, rebut, recant, refuse to admit, refute, reject, renounce, repudiate, resist, retract, revoke, take back, take issue with, traverse, withstand