For pity’s sake!

for pity's sake

A mild oath of surprise, exasperation, annoyance, frustration, or anger. For pity's sake! I haven't seen you in years! Would you let me finish my story, for pity's sake? Oh for pity's sake, I just had the car fixed and now you've put a dent in it!
See also: sake
Farlex Dictionary of Idioms.

For pity’s sake!

verb
See For Pete’s sake!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • for pity's sake
  • for Christ's sake
  • (good) heavens
  • for God's sake
  • for God's, heaven's, pity's, etc. sake
  • almighty
  • (for) land('s) sake(s) (alive)
  • (my) goodness
  • fooey
  • Would it kill (someone) to (do something)?