A written assurance that some product or service will be provided or will meet certain specifications.

synonyms: warrant, warrantee, warranty.

Roget 768: promise, undertaking, word, troth, plight, pledge, parole, word of honor, vow; oath etc. (affirmation) 535; profession, assurance, warranty, guarantee, insurance, obligation; contract etc. 769; stipulation.    engagement, preengagement; affiance; betroth, betrothal, betrothment.    ... show more

Roget 771: security; guaranty, guarantee; gage, warranty, bond, tie, pledge, plight, mortgage, collateral, debenture, hypothecation, bill of sale, lien, pawn, pignoration^†; real security; vadium^†.    stake, deposit, earnest, handsel, caution.    promissory note; bill, bill of exchange; I.   O.U.; personal security, covenant, specialty; parole etc. (promise) 768.    acceptance, indorsement^†, signature, execution, stamp, seal.    sponsor, cosponsor, sponsion^†, sponsorship; surety, bail; mainpernor^†, hostage; godchild, godfather, godmother.    recognizance; deed of indemnity, covenant of indemnity.    authentication, verification, warrant, certificate, voucher, docket, doquet^†; record etc. 551; probate, attested copy.    receipt; acquittance, quittance; discharge, release.    muniment^†, title deed, instrument; deed, deed poll; assurance, indenture; charter etc. (compact) 769; charter poll; paper, parchment, settlement, will, testament, last will and testament, codicil.    ... show more

Dutch: borg, garantie, verzekering, waarborg, zekerheid
Polish: rękojmia, poręczycielstwo, zapewnienie, poręka, poręczenie, gwarancja

An unconditional commitment that something will happen or that something is true.

Polish: gwarancja

A collateral agreement to answer for the debt of another in case that person defaults.

synonym: guaranty.

Polish: poręczenie

Give surety or assume responsibility.

synonym: vouch.

Make certain of:
— Preparation will guarantee success!.

synonyms: assure, ensure, insure, secure.

Roget 768: promise; give a promise etc. n.; undertake, engage; make an engagement, form an engagement; enter into an engagement, enter on an engagement; bind oneself, tie oneself, pledge oneself, commit oneself, take upon oneself; vow; swear etc. (affirm) 535, give one's word, pass one's word, pledge one's word, plight one's word, give one's honor, pass one's honor, pledge one's honor, plight one's honor, give credit, pass credit, pledge credit, plight credit, give troth, pass troth, pledge troth, plight troth; betroth, plight faith.    assure, warrant, guarantee; covenant etc. 769; attest etc. (bear witness) 467.    hold out an expectation; contract an obligation; become bound to, become sponsor for; answer for, be answerable for; secure; give security etc. 771; underwrite.    adjure, administer an oath, put to one's oath, swear a witness.    ... show more

Roget 771: give security, give bail, give substantial bail; go bail; pawn, impawn^†, spout, mortgage, hypothecate, impignorate^†.    guarantee, warrant, warrantee, assure; accept, indorse, underwrite, insure; cosign, countersign, sponsor, cosponsor.    execute, stamp; sign, seal etc. (evidence) 467.    let, sett^†; grant a lease, take a lease, hold a lease; hold in pledge; lend on security etc. 787.    ... show more

Promise to do or accomplish:
— Guarantee to free the prisoners.

synonym: undertake.

Dutch: ondernemen

Stand behind and guarantee the quality, accuracy, or condition of.

synonym: warrant.