Reverse Dictionary: TRYING (difficult)

NOUNS
► ASS-BREAKER that which is bitterly trying or unpleasant, esp. an agonizing or arduous task, experience, etc.; a bitter disappointment → 1961 Amer. sl.
► BALLBREAKER that which is bitterly trying or unpleasant, esp. an agonizing or arduous task, experience, etc.; a bitter disappointment  → 1942 US sl.
► BALL-CRUSHER that which is bitterly trying or unpleasant, esp. an agonizing or arduous task, experience, etc.; a bitter disappointment  → 1970 US sl.