Cut it - Idioms by The Free Dictionary
1.. Also, cut that.. Stop, as in I won't stand for that-cut it! or If you don't cut that, I'll tell.. [ Slang; first half of 1800s] Also see cut it out.. 2.. Manage, tolerate, as in I don't know how he can cut it.. [ Slang; c.. 1900] 3.. Be effective, prove satisfactory, as in She's getting old and can no longer cut it..