Synonyms for confirm

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. confirm, reassert, affirm

usage: strengthen or make more firm; "The witnesses confirmed the victim's account"

3. confirm, strengthen, beef up, fortify

usage: make more firm; "Confirm thy soul in self-control!"

4. confirm, approve, O.K., okay, sanction

usage: as of a person to a position; "The Senate confirmed the President's candidate for Secretary of Defense"

5. confirm, covenant

usage: administer the rite of confirmation to; "the children were confirmed in their mother's faith"