Related Clues:
- Tough
- Toughie
- What the crab has makes it crabbed, perhaps
- Habitual criminal makes for difficult police work
- It takes some cracking
- Tough person to deal with
- It's not easy being close to sick person and toughie
- Tough guy is a challenge to legal team?
- Money running short before end of binge? That's tough
- Difficult customer demands solid piece of luggage
- Incorrigible person who's a problem to a detective?
- Difficult patient gets tough
- Brazil, say, presents a problem difficult to crack
- Intractable person
- One tough, difficult group of teachers