affirms

verb

  1. To agree, verify or concur; to answer positively.

    "She affirmed that she would go when I asked her."

  2. To assert positively; to tell with confidence; to aver; to maintain as true.

  3. To support or encourage.

    "They did everything they could to affirm the children's self-confidence."

  4. To make firm; to confirm, or ratify; especially to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review.

Synonyms: validate
Antonyms: deny, disaffirm, invalidate, repudiate