- confirm
- v1. corroborate, verify, authenticate, validate, substantiate; bear out, prove, establish, evidence, give credence to; attest, certify, bear witness to, testify, vouch for; affirm, aver, assure, pledge, promise, guarantee, ensure, secure, insure; bind, seal, settle, clinch, clench, secure, fix, make certain or sure.2. sanction, accredit, authorize, warrant; approve, ratify, endorse, support, underwrite; sustain, back up, uphold, make good, justify, vindicate; countersign, sign, subscribe, recognize, acknowledge; agree, con sent, accede, assent, concur, accord, acquiesce, comply.3. strengthen, make firmer, reinforce, fortify, buttress, brace, steel.
A Note on the Style of the synonym finder. 2014.