Synonyms of warrant

1. warrant, writ, judicial writ: usage: a writ from a court commanding police to perform specified acts
2. warrant, stock warrant, stock-purchase warrant, security, surety: usage: 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"
3. sanction, countenance, endorsement, indorsement, warrant, imprimatur, approval, commendation: usage: formal and explicit approval; "a Democrat usually gets the union's endorsement"
4. guarantee, warrant, warrantee, warranty, assurance, pledge: usage: a written assurance that some product or service will be provided or will meet certain specifications

1. justify, warrant, confirm, reassert: usage: show to be reasonable or provide adequate ground for; "The emergency does not warrant all of us buying guns"; "The end justifies the means"
2. guarantee, warrant, back, endorse, indorse, plump for, plunk for, support: usage: stand behind and guarantee the quality, accuracy, or condition of; "The dealer warrants all the cars he sells"; "I warrant this information"