affirm

1. Establish or strengthen as with new evidence or facts (synset 200667804)
   "his story confirmed my doubts"; "The evidence supports the defendant"
   subtypes:

   • back, back up - establish as valid or genuine
   • vouch - give supporting evidence
   • verify - confirm the truth of
   • demonstrate, establish, prove, shew, show - establish the validity of something, as by an example, explanation or experiment
   • document - support or supply with references
   • validate - prove valid; show or confirm the validity of something
   same as: confirm, corroborate, substantiate, support, sustain
2. To declare or affirm solemnly and formally as true (synset 201013058)
   "Before God I swear I am innocent"
   is a type of: declare - state emphatically and authoritatively
   subtypes:

   • hold - assert or affirm
   • claim, take - lay claim to; as of an idea
   • attest - authenticate, affirm to be true, genuine, or correct, as in an official capacity
   • declare - state firmly
   • protest - affirm or avow formally or solemnly
   • assure, tell - inform positively and with certainty and confidence
   same as: assert, aver, avow, swan, swear, verify
3. Say yes to (synset 201013752)
   subtypes:

   • claim - assert or affirm strongly; state to be true or existing
   • reaffirm - affirm once again
   • confirm, reassert - strengthen or make more firm
   • defend, maintain - state or assert

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