slang An expression of dismissal of something that one considers ridiculous, stupid, nonsensical, etc. A: "We've been trying to get this dishwasher working for over an hour, and we haven't gotten anywhere with it." B: "Yeah, nerts to this. Let's just go buy a new one." A: "The boss wants you to come in on Saturday to go through the inventory." B: "nerts to that—I'll be on a plane to Mexico!"