Synonyms of affirm

Verb

1. confirm, corroborate, sustain, substantiate, support, affirm

usage: establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant"

2. affirm, verify, assert, avow, aver, swan, swear, declare

usage: to declare or affirm solemnly and formally as true; "Before God I swear I am innocent"

3. affirm

usage: say yes to

Definition and meaning of affirm (Dictionary)