Synonyms of confirmations

1 Syllable
nod
2 Syllables
support, visa, witness, assent, okay, accord, consent, proving, sanction, passing
3 Syllables
approval, agreement, supporting, verifying, affirming, sanctioning, admission, passage, testament, avowal, accepting
4 Syllables
testimonial, affirmation, evidence, recognition, substantiation, endorsement, validating, attestation, authorizing, acceptance, testimony
5 Syllables
authorization, verification, corroboration, authenticating, corroborating, authentication