Entry Word: warrant

Function: verb

Meaning: 1 to assume responsibility for the satisfactory quality or performance of <the computer company unconditionally warrants all of its products for one full year>

Synonyms guarantee

Related Words attest, authenticate, avouch, certify, testify (to), vouch (for), witness; assure, bond, contract, covenant; pledge, plight, swear, vow; adhere, assert, declare, insist; insure

2 to give official acceptance of something as satisfactory <the state constitution warrants these measures> — see approve
3 to have as a requirement <the situation warrants your immediate attention> — see need 1
4 to state as a fact usually forcefully <weʼll all be dead before that happens, I warrant> — see claim 1