bored or unhappy, especially with a situation that has continued for too long You look fed up. What's the matter? fed up with somebody/something People are fed up with all these traffic jams. In the end, I just got fed up with his constant complaining. I wish he'd get a job. I'm fed up with it (= with the situation). fed up with doing something I'm fed up with waiting for her. I’m fed up to the back teeth(= very fed up) with hearing about your problems. Some people say ‘fed up of something’ in informal British English, but this is not considered correct in standard English. See related entries: UnhappinessExtra examples I’m absolutely fed up with the whole thing. The children were starting to get a bit fed up. Trent was fed up of being lied to. You look really fed up! I wish he’d get a job. I’m fed up with it. I’m fed up to the back teeth with hearing about her problems. I’m fed up with waiting for her. We were starting to feel fed up through lack of progress. You look fed up. What’s the matter?