Absolutely not; no way.
no chance
Absolutely not; under no circumstances.
not on your nelly
not on your life, an emphatic form of no.
not in Kansas anymore
No longer in quiet and comfortable surroundings.
not worth a brass farthing
Worth nothing or next to nothing.
not at all
A conventional reply to an expression of gratitude.
not the end of the world
(It's of) minor importance, at least not as important as it first seem…