1. (used to express negation, denial, refusal, or prohibition): You must not do that. It's not far from here.
2. U.S. Slang. (used jocularly as a postpositive interjection to indicate that a previous statement is untrue): I just love working overtime without pay. Not! Idioms
3. not so much, Informal. (an expression of dismissive scorn, ambivalence, or skepticism): Attractive? Yes. Smart? Not so much. Is the world coming to an end? Yeah, not so much.
This list can help you learn new vocabulary more quickly and be able explore other words more easily.