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1. Show to be reasonable or provide adequate ground for
   "The emergency does not warrant all of us buying guns"
   - justify
    
2. Stand behind and guarantee the quality, accuracy, or condition of
   "The dealer warrants all the cars he sells"; "I warrant this information"
   - guarantee

1. A writ from a court commanding police to perform specified acts
    
2. A type of security issued by a corporation (usually together with a bond or preferred stock) that gives the holder the right to purchase a certain amount of common stock at a stated price
   "as a sweetener they offered warrants along with the fixed-income securities"
   - stock warrant, stock-purchase warrant
    
3. Formal and explicit approval
   "a Democrat usually gets the union's warrant"
   - sanction, countenance, endorsement, indorsement, imprimatur
    
4. A written assurance that some product or service will be provided or will meet certain specifications
   - guarantee, warrantee, warranty

Derived forms: warranting, warranted, warrants

See also: warrantee, warrantor

Type of: approval, assurance, back, commendation, confirm, endorse, indorse, judicial writ, pledge, plump for, plunk for, reassert, security, support, surety, writ

Encyclopedia: Warrant