- Something that provides assurance or confirmation; a guarantee or proof: a warrant of authenticity; a warrant for success.
- A warrant officer.
- (New Zealand) A Warrant of Fitness; a document certifying that a motor vehicle meets certain standards of safety and mechanical soundness.
- Authorization or certification; sanction, as given by a superior.
- (law) A judicial writ authorizing an officer to make a search, seizure, or arrest or to execute a judgment.
"an arrest warrant issued by Thai supreme court"
- (finance) An option, usually with a term at issue greater than a year, usually issued together with another security, to buy other securities of the issuer.
- (obsolete) A protector or defender.
- An order that serves as authorization, especially: A voucher authorizing payment or receipt of money.
- A certificate of appointment given to a warrant officer.
- (transitive) To guarantee as being true; (colloquially) to believe strongly.
"That tree is going to fall, I'll warrant."
- (transitive) To justify; to give grounds for.
"Circumstances arose that warranted the use of lethal force."
- (transitive) To guarantee (something) to be (of a specified quality, value etc.).
- (transitive) To authorize; to give (someone) warrant or sanction (to do something).
"I am warranted to search these premises fully."
- (obsolete, transitive) To protect, keep safe (from danger).
- (obsolete, transitive) To give (someone) a guarantee or assurance (of something); also, with double object, to guarantee (someone something).