Noun

• S: (n) warrant (warrant%1:10:00::) (a writ from a court commanding police to perform specified acts)
• S: (n) warrant (warrant%1:21:00::), stock warrant (stock_warrant%1:21:00::), stock-purchase warrant (stock-purchase_warrant%1:21:00::) (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"
• S: (n) sanction (sanction%1:10:00::), countenance (countenance%1:10:00::), endorsement (endorsement%1:10:00::), indorsement (indorsement%1:10:00::), warrant (warrant%1:10:02::), imprimatur (imprimatur%1:10:00::) (formal and explicit approval) "a Democrat usually gets the union's endorsement"
• S: (n) guarantee (guarantee%1:10:00::), warrant (warrant%1:10:01::), warrantee (warrantee%1:10:00::), warranty (warranty%1:10:00::) (a written assurance that some product or service will be provided or will meet certain specifications)

Verb

• S: (v) warrant (warrant%2:32:00::) (provide adequate grounds to justify (a certain course of action)) "The emergency does not warrant all of us buying guns"
• S: (v) guarantee (guarantee%2:32:02::), warrant (warrant%2:32:01::) (stand behind and guarantee the quality, accuracy, or condition of) "The dealer warrants all the cars he sells"; "I warrant this information"