forget (about) it
1. To not expect something to work or happen. Often used as an imperative. If it's a pay raise you're looking for, you can just forget about it. Forget it, there's no way we could get up there without better equipment.
2. Nevermind; I am not going to explain further. Forget about it. I don't want to talk about it. You know what, just forget it. I'm sorry I ever mentioned it.
3. Don't mention it; it was nothing. A response to someone thanking one. A: "Thank you again for your help yesterday." B: "Forget it, I was happy to lend a hand."
4. Don't worry about it; don't consider it a problem. You're still thinking about that? I told you I'm over it. Forget about it.
5. An expression used to indicate that what has just been mentioned is superlative or extreme, and perhaps cannot be put into words. Their wedding ceremony was already a bit weird, but the reception? Forget about it! They were good last year, but with the new draft pick? Forget about it!
Forget (about) it!
1. Inf. Drop the subject!; Never mind!; Don't bother me with it. Jane: Then, there's this matter of the unpaid bills. Bill: Forget it! You'll have to pay them all! Sally: What's this I hear about you and Tom? Sue: Forget about it! I don't want to talk to you about it.
2. Inf. Nothing. Sue: What did you say? Mary: Forget it! Tom: Now I'm ready to go. Sue: Excuse me? Tom: Oh, nothing. Just forget it.
3. Inf. You're welcome.; It was nothing. John: Thank you so much for helping me! Bill: Oh, forget it!' Bob: We're all very grateful to you for coming into work today on your day off. Mary: Forget about it! No problem!
1. exclam. Never mind, it wasn’t important! I had an objection, but just forget it!
2. exclam. Never mind, it was no trouble at all! No trouble at all. Forget it!