"Hell no!"

SCREWTHAT

This emphatic refusal might be shouted when someone’s had enough of a bad idea—think of a tool combined with a dismissive word.

"Hell no!" is a strong, informal way to reject something, and "screw that" is a matching slang phrase with the same meaning. The answer plays on the idea of swearing for emphasis—both phrases use blunt language to express refusal. It’s a direct, conversational fit where the clue and answer share the same defiant tone.