affirm meaning and definition

AFFIRM verb

Definition of affirm (verb)

1. establish or strengthen as with new evidence or facts
   • "his story confirmed my doubts"; "The evidence supports the defendant"
   • synonyms: confirm, corroborate, substantiate, support, sustain
   • antonym: contradict
2. to declare or affirm solemnly and formally as true
   • "Before God I swear I am innocent"
   • synonyms: assert, aver, avow, swan, swear, verify
3. say yes to