Also, tough luck. A trying or troublesome circumstance, bad luck, as in He got a tough break when he was denied a raise, or Tough luck for the team last night. This idiom uses tough in the sense of "difficult," a usage dating from the early 1600s. The variant is also used as a sarcastic interjection, as in So you didn't make straight A's-tough luck! A slangy variant of this interjection is tough beans, and a ruder version is tough shit. [Colloquial; c. 1900]