nark UK /nɑːk/US /nɑːɹk/verb 4noun 2forms 3 verb4 •(slang) 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.I don’t trust that guy; he’s gonna nark us out. •(slang) To annoy or irritate.It really narks me when people smoke in restaurants. •(slang) To complain.He narks in my ear all day, moaning about his problems. •(slang) To stop.Nark it! I hear someone coming! noun2 •(UK, slang) A police spy or informer.When we got to the Chief of Police's office a crowd of the most dreadful-looking scoundrels, obviously police narks, informers, and spies of every kind, were hanging about outside the door. — 1938 •(Australia, slang) An unpleasant person, especially one who makes things difficult for others. formsnarked · narking · narks
