nark

About 0.03 uses per million words.

Meaning

noun A police spy or informer.
noun An unpleasant person, especially one who makes things difficult for others.
verb To serve or behave as a spy or informer; to tattle.
“If you nark on me, I’ll rip your arms off,” said Tim to his brother, as he passed him a joint.
verb To annoy or irritate.
It really narks me when people smoke in restaurants.
verb To complain.
He narks in my ear all day, moaning about his problems.
verb To stop.
Nark it! I hear someone coming!
noun Alternative form of narc (narcotics officer).