Answer: indurate

AnswerCrossword Clue
INDURATEHardened
INDURATEHarden
indurateto inure; accustom
indurateto make hard; harden, as rock, tissue, etc.
induratephysically or morally hardened
indurateto become established or confirmed
indurateto make hard (firm and unyielding)
induratehardened; unfeeling; callous; inured
indurateto become hard; harden
indurateto make callous, stubborn, or unfeeling