Related Clues:
- Mohs scale adjective
- Unwilling to budge
- Herculean
- Not subject to bargaining
- Word that can precede the first word of the six longest puzzle answers
- Not liquidy
- Like some crosswords
- Like some mattresses
- John Grisham novel, with "The"
- Pale and unhealthy looking
- Tough to crack
- Meat pie
- Steellike
- Rocklike
- Tough to solve