arrest, death, search
The king refused to sign the death warrant for his old friend.

royal (BrE)
outstanding
He has an outstanding warrant for his arrest.

bench (AmE)
The judge issued a bench warrant.

criminal, judicial (both AmE)

authorize, grant, issue, serve, sign
The commissioner has issued a warrant for her arrest.
The police served a warrant on him.

get, obtain
execute
Police who executed a search warrant found a substantial amount of stolen property on the premises.

need, require
seek

card (BrE)

without a warrant
In certain circumstances, police may enter premises without a warrant.

warrant for

hardly
The TV appearance was so brief that it hardly warranted comment.

certainly, clearly

be important enough to, be serious enough to, be severe enough to
They do not consider the case serious enough to warrant an investigation.

Warrant is used with these nouns as the subject:
circumstance

Warrant is used with these nouns as the object:
attention, conclusion, consideration, discussion, dismissal, examination, inclusion, intervention, investigation, look, mention, scrutiny