Definition of "affirm" in English

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.

   • gender-affirming; trans-affirming
   • They did everything they could to affirm the children's self-confidence.

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

5. (law) To state under a solemn promise to tell the truth which is considered legally equivalent to an oath, especially of those who have religious or other moral objections to swearing oaths; also solemnly affirm.

interjection

1. (aviation) Yes; true; correct.