Related Clues:

• Mattress option
• Solid
• Unwilling to budge
• Not subject to bargaining
• John Grisham novel, with "The"
• Unwilling to negotiate
• Like some offers
• Unshakable
• Business partnership
• Like a trap in need of resetting
• Tighten (up)
• Not negotiable
• Helped get out
• Tofu specification
• Grisham novel (with "The")