| Main Entry: | |
| Part of Speech: | verb |
| Definition: | pledge, promise |
| Synonyms: | affirm, angel, answer for, assure, attest, aver, back, bankroll, be surety for, bind oneself, certify, confirm, cosign, endorse, ensure, evidence, evince, get behind, give bond, grubstake, guaranty, insure, juice*, maintain, make bail, make certain, make sure, mortgage, pick up the check, pick up the tab, protect, prove, reassure, secure, sign for, stake, stand behind, stand up for, support, swear, testify, vouch for, wager, warrant, witness |
| Notes: | guarantee is from Old French garant 'a warrant,' while warranty is from Old North French warantie, derived from warant 'a warrant.' Both garant and warant came from Frankish (the West Germanic language spoken in the 400s and 500s in the region of ancient Gaul that became France), represented by Old High German weren 'to confirm, warrant.' Guarantee is a general term for a representation regarding a good's quality and performance - and warranty is the legal term for the document; the person to whom it is issued is the warrantee with the issuer being the warrantor |
| Antonyms: | break |
| Main Entry: | affirm |
| Part of Speech: | verb |
| Definition: | declare the truth of something |
| Synonyms: | assert, asseverate, attest, aver, avouch, avow, certify, cinch, clinch, confirm, cross heart, declare, guarantee, have a lock on, ice*, insist, lock up, maintain, nail down, okay, predicate, profess, pronounce, put on ice, ratify, repeat, rubber-stamp, say so, set, state, swear, swear on bible, swear up and down, testify, vouch, witness |
| Antonyms: | deny, negate, nullify, veto |
| Main Entry: | assure |
| Part of Speech: | verb |
| Definition: | promise |
| Synonyms: | affirm, attest, aver, brace up, buck up, certify, confirm, give one's word, guarantee, pledge, swear, vouch for, vow |
| Main Entry: | assure |
| Part of Speech: | verb |
| Definition: | make certain |
| Synonyms: | cinch, clinch, complete, confirm, ensure, guarantee, have a lock on, ice*, insure, lock, lock on, lock up, make sure, nail down, put on ice, seal, secure, set |
| Main Entry: | authenticate |
| Part of Speech: | verb |
| Definition: | establish as real, genuine |
| Synonyms: | accredit, attest, authorize, bear out, certify, confirm, corroborate, endorse, guarantee, justify, prove, substantiate, validate, verify, vouch, warrant |
| Main Entry: | certify |
| Part of Speech: | verb |
| Definition: | declare as true |
| Synonyms: | accredit, approve, ascertain, assure, attest, authenticate, authorize, aver, avow, commission, confirm, corroborate, endorse, guarantee, license, notify, okay, profess, reassure, rubber-stamp, sanction, show, state, swear, testify, validate, verify, vouch, witness |
| Antonyms: | contradict, counteract, deny, disavow, discredit, invalidate, reject, repudiate |
| Main Entry: | defend |
| Part of Speech: | verb |
| Definition: | show support for |
| Synonyms: | advocate, aid, apologize for, argue, assert, back, back up, bear one out, befriend, champion, come to defense of, cover for, endorse, espouse, exculpate, exonerate, explain, go to bat for, guarantee, justify, maintain, plead, prove a case, put in a good word, rationalize, recommend, ride shotgun for, say in defense, second, speak up for, stand by, stand up for, stick up for, stonewall, support, sustain, thump for, uphold, vindicate, warrant |
| Antonyms: | deny, forsake, renounce |
| Main Entry: | endorse |
| Part of Speech: | verb |
| Definition: | support, authorize |
| Synonyms: | accredit, advocate, affirm, approve, attest, authenticate, back, back up*, bless, boost, certify, champion, commend, confirm, countenance, defend, favor, give a boost to, give green light, give one's word, give the go-ahead, give the nod, go along with, go to bat for, go with, guarantee, lend one's name to, okay, praise, push, ratify, recommend, rubber-stamp, sanction, second, stand behind, stand up for, stump for, subscribe to, sustain, underwrite, uphold, vouch for, warrant, witness |
| Antonyms: | censure, disapprove, oppose, protest, reject, repel, unauthorize |
| Main Entry: | engage |
| Part of Speech: | verb |
| Definition: | promise to marry |
| Synonyms: | affiance, agree, betroth, bind, catch, commit, contract, covenant, give one's word, guarantee, hook, obligate, oblige, pass, pledge, tie, troth, turn on, undertake, vouch, vow |
| Antonyms: | break off, break up |