[not on your life] {adv. phr.}, {informal} Certainly not; not ever; […]

[not one's cup of tea] See: [CUP OF TEA].

[not one's scene] See: [CUP OF TEA].

[not see beyond one's nose] See: [SEE BEYOND ONE'S NOSE].

[not so bad] See: [NOT BAD].

[not so hot] or [not too hot] {adj. phr.} Ineffective; not […]

[not the only fish in the sea] {n. phr.} One of […]

[not the only pebble on the beach] {n. phr.} Not the […]

[not the thing] {n. phr.} Not the accepted form of action; […]

[not to get to first base] {v. phr.} To fail to […]