warrant >> ˈwɒr(ə)nt
Definition: [noun] a document issued by a legal or government official authorizing the police or another body to make an arrest, search premises, or carry out some other action relating to the administration of justice.
Example: magistrates issued a warrant for his arrest
Definition: [noun] justification or authority for an action, belief, or feeling.
Example: there is no warrant for this assumption
Definition: [noun] an official certificate of appointment issued to an officer of lower rank than a commissioned officer.
Definition: [verb] justify or necessitate (a course of action).
Example: the employees feel that industrial action is warranted
Definition: [verb] officially affirm or guarantee.
Example: the vendor warrants the accuracy of the report