1. (verb)confirm, corroborate, sustain, substantiate, support, affirm establish or strengthen as with new evidence or facts "his story confirmed my doubts"; "The evidence supports the defendant"
2. (verb)affirm, verify, assert, avow, aver, swan, swear to declare or affirm solemnly and formally as true "Before God I swear I am innocent"
3. (verb)affirm say yes to
Definitions of 'affirm'
Webster 1913 Dictionary
1. (verb)affirm to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review
2. (verb)affirm to assert positively; to tell with confidence; to aver; to maintain as true; -- opposed to deny
3. (verb)affirm to declare, as a fact, solemnly, under judicial sanction. See Affirmation, 4
4. (verb)affirm to declare or assert positively
5. (verb)affirm to make a solemn declaration, before an authorized magistrate or tribunal, under the penalties of perjury; to testify by affirmation
Definition of affirm 
