Synonyms of certifying
- 1 Syllable
- show, vouch, swear
- 2 Syllables
- avow, aver, profess, witness, confirm, okay, attest, state, sanction
- 3 Syllables
- endorse, testify, guarantee, rubber-stamp, notify, ascertain, commission, accredit, license, assure, approve, reassure, verify
- 4 Syllables
- authorize, validate
- 5 Syllables
- corroborate, authenticate