1
general::
Phrase(s): have had enough
to have had as much of something as is needed or will be tolerated. • Stop yelling at me. I’ve had enough. • No more potatoes, please. I’ve had enough. • I’m leaving you, Bill. I’ve had enough!
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Want no more of something, as in I've had enough of their quarreling. This phrase uses enough in the sense of "an adequate amount," which is intended ironically to mean "a more than sufficient amount." [c. 1700] For synonyms, see FED TO THE GILLS; HAVE HAD IT, def. 1.
American Heritage Idioms