Related Clues:

• Harden by heat
• Habituate: Var.
• Caseharden
• Prepare for the worst
• Grow accustomed (to)
• Strengthen by tempering
• Harden (Var.)
• Make used (to)
• Become accustomed
• Get used to
• Make accustomed (Var.)
• A way to habituate
• Toughen or harden (Var.)
• Get used (to) (Var.)
• Harden (to) (Var.)