warrant - to be/make necessary or appropriate in a particular situation - มีเหตุผลอันสมควร

warrant (noun) - a legal document that is signed by a judge and gives the police authority to do something - หมาย

warrant - "In finance, a warrant is a security that entitles the holder to buy the underlying stock of the issuing company at a fixed price called exercise price until the expiry date. Warrants and options are similar in that the two contractual financial instruments allow the holder special rights to buy securities." (Source: Wikipedia)