not on your life

Certainly not, as in Go hang-gliding? Not on your life. The first recorded use of this interjection was in 1896.

Informal

Absolutely not; not for any reason whatsoever.

Name	Pronounced	Usage
Hyman	['haimən]
Ya	-	Chinese
Siors	-	Welsh
Kylli	KUYL-lee	Finnish
Hamilcar	hə-MIL-kahr (English), HAM-il-kahr (English)	Ancient Near Eastern (Latinized), History
Celandine	SEL-ən-deen	English (Rare)