Adverb
not on your life
(idiomatic) Absolutely not; under no circumstances.
Synonyms: no chance, not a chance, by no means, no fear, nothing doing, no way, chance'd be a fine thing, not on your nelly
Do you think I will ever go back after that? Not on your life!
Retire? Not on your life. I have no plans to stop singing. What are you going to do when you love music? It's a terrible disease. You can't stop. Of course, I'd like to get off the road. Peggy Lee