Affirmation

Antonyms of affirmation:
reversal, disclaimer, challenge, dispute, question, confutation, disproof, rebuttal, refutation, contradiction, denial, negation, disavowal.
Examples of usage:
  1. When John Carvel answered Hermione's question about Professor Cutter by a simple affirmation to the effect that he was a very learned man, the young girl did not press her father with any more inquiries, but turned to me.
    "Paul Patoff", F. Marion Crawford.
  2. It is a wonderful affirmation, not only of His existence but of His relation to " us," His people.
    "Messages from the Epistle to the Hebrews", Handley C.G. Moule.
  3. The Chinaman nodded in affirmation as he pushed back the coffins.
    "The Exploits of Elaine", Arthur B. Reeve.