A guarantee.

present participle of warrant

plural of warranting

Justifiable, just, proper. / Authorized by warrant or right. / Of animals: having reached a sufficient age to be hunted.

(transitive, obsolete) To protect, keep safe (from danger).

Authorization or certification; a sanction, as given by a superior. / (countable) Something that provides assurance or confirmation; a guarantee or proof.

simple past tense and past participle of warrant

plural of warrant

Authorized with a warrant. / Deserved, necessary, appropriate.

Third-person singular simple present indicative form of warrant