warrant
Definitions
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.
A justification or valid reason for an action or belief.
To guarantee or attest to the quality, accuracy, or condition of something.
Examples
The seriousness of the crime was enough to warrant a full investigation by the police.
The judge signed the search warrant after reviewing the evidence presented by the detectives.
Your hard work and dedication certainly warrant a promotion in the near future.