Be done for Definition 1 of 3Pro Tip 1/3Impending Doom Suggests unavoidable trouble coming, often due to a specific action or mistake. If I don't submit this assignment, I'll be done for. Pro Tip 2/3Colloquial Warning Used in casual speech to warn someone of consequences, not usually in formal situations. You'll be done for if mom sees this mess! Pro Tip 3/3Consequence of Actions Specifically refers to negative outcomes as a result of someone's actions. He cheated on the test; he's done for if he gets caught.