warrant
noun
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a writ from a court commanding police to perform specified acts
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a written assurance that some product or service will be provided or will meet certain specificationsguaranteewarranteewarranty
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formal and explicit approvalsanction
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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 warrantstock-purchase warrant
verb
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stand behind and guarantee the quality, accuracy, or condition of“The dealer warrants all the cars they sell.”guarantee
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show to be reasonable or provide adequate ground for“The emergency does not warrant all of us buying guns”justify