warrant

/ˈwɔrənt/
verb
  1. To justify or make necessary.
    • Her excellent performance warrants a promotion.
    • The weather conditions did not warrant canceling the event.
    • The seriousness of the problem warrants immediate attention.
  2. To guarantee or promise that something is true or will happen.
    • He warranted that the car had never been in an accident.
    • The company warrants the accuracy of its financial reports.
    • I warrant that this product will last for at least five years.
noun
  1. An official document that gives permission to do something, such as make an arrest or search a building.
    • The judge signed a warrant for the suspect's arrest.
    • The police obtained a search warrant before entering the house.
    • They needed a warrant to access the private computer files.
  2. A reason or justification for an action, belief, or feeling.
    • His past behavior gives little warrant for trust.
    • There is no warrant for such harsh criticism of her work.
    • The evidence provides a strong warrant for further investigation.