verb
1.
Synonyms: ratify
Related Word: accede, acquiesce, assent, consent, subscribe; validate
Idioms: make good
Contrasted words: decline, refuse, reject
2.
to attest to the truth, genuineness, accuracy, or validity of something
a surprise witness confirmed his account of the incident
Synonyms: authenticate, bear out, corroborate, justify, substantiate, validate, verify
Related Word: attest, certify, vouch, witness; back, support, underpin, uphold, warrant; check, check out
Contrasted words: confute, controvert, disprove, refute; contravene, gainsay, impugn, negative, traverse
Antonyms: deny; contradict