not on your life
used as a reply to a question or suggestion to say that you definitely will not do something

[TahlilGaran] Dictionary of Contemporary English ▲

Not on your life!
[informal]
something that you say in order to tell someone with a lot of force that you will not do something.
'Would you kiss him?' 'Not on your life!'

[TahlilGaran] English Idioms Dictionary ▲

not on your life
definitely not
"May I borrow your car?"

"Not on your life."

[TahlilGaran] English Idioms Dictionary ▲

not on your life
adv. phr., informal Certainly not; not ever; not for any reason.
■ Used for emphasis.
I wouldn't drive a car with brakes like that
■ not on your life.
Did he thank me for my advice? Not on your life.

[TahlilGaran] English Idioms Dictionary ▲