guarantee synonyms

guarantee

v.

  1. To certify

    attest, testify, aver, vouch for, declare, assure, ensure, answer for, be responsible for, stand behind, become surety for, evince, evidence, endorse, secure, make sure, make certain, warrant, insure, witness, prove, reassure, support, affirm, confirm.

  2. To give security

    pledge, give bond, go bail, wager, stake, give a guarantee, stand good for, mortgage, pawn, back, sign for.

  3. To promise

    swear, assure, insure, cross one's heart*; see promise 1.

Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.