- testify
- v1. attest, witness, bear witness, evidence, offer evidence, depone; depose, certify, certificate, warrant; document, circumstantiate, manifest, show, demonstrate; confirm, prove, bear out, verify, validate, establish, authenticate, corroborate, substantiate, sustain, uphold, vindicate; endorse, vouch for, support, back up, stand behind or by.2. swear to, state under oath, allege, plead; vow, give one's solemn word or promise, pledge, state on one's honor, promise; avouch, asseverate, assure, offer assurance, affirm.3. declare, protest, assert, profess; avow, own, acknowledge, admit, confess to; proclaim, speak out for, announce, make known.
A Note on the Style of the synonym finder. 2014.