warrant

Authorization or certification; a sanction, as given by a superior.

Something that provides assurance or confirmation; a guarantee or proof.

“a warrant of authenticity; a warrant for success”

An order that serves as authorization; especially a voucher authorizing payment or receipt of money.

An option, usually issued together with another security and with a term at issue greater than a year, to buy other securities of the issuer.

A judicial writ authorizing an officer to make a search, seizure, or arrest, or to execute a judgment.

“an arrest warrant issued by the court”

Short for warrant officer.

A document certifying that a motor vehicle meets certain standards of mechanical soundness and safety; a warrant of fitness.

A defender, a protector.

Underclay in a coal mine.

To protect, keep safe (from danger).

To give (someone) an assurance or guarantee (of something); also, with a double object: to guarantee (someone something).

To guarantee (something) to be (of a specified quality, value, etc.).

To guarantee as being true; (colloquially) to believe strongly.

“That tree is going to fall, I’ll warrant.”

To authorize; to give (someone) sanction or warrant (to do something).

“I am warranted to search these premises fully.”

To justify; to give grounds for.

“Circumstances arose that warranted the use of lethal force.”