'affirm' definitions:

Definition of 'affirm'

From: WordNet
verb
Establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant" [syn: confirm, corroborate, sustain, substantiate, support, affirm] [ant: contradict, negate]
verb
To declare or affirm solemnly and formally as true; "Before God I swear I am innocent" [syn: affirm, verify, assert, avow, aver, swan, swear]
verb
Say yes to

Synonyms of 'affirm'

From: Moby Thesaurus