1
general::
Done, finished, as in I'll be glad when exams are over with. [Colloquial; second half of 1900s] Also see OVER AND DONE WITH.
American Heritage Idioms
2
general::
Phrase(s): *over (and done) with
finished. (*Typically: be ~; get something ~; have something ~.) • I’m glad that’s over and done with. • Now that I have college over and done with, I can get a job.
McGrawhill's American Idioms And Phrasal Verbs