{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./
NOT ON YOUR LIFE
Meaning of NOT ON YOUR LIFE in English
Slang English vocab. Английский сленговый словарь. 2012