Answer:

hardened

Answer	Crossword Clue
HARDENED	Got set
HARDENED	Made tougher
HARDENED	Got tough

HARDENED	Callous.
HARDENED	Callous
HARDENED	Made callous
HARDENED	Like some criminals
HARDENED	Set
HARDENED	Made unfeeling, as a heart

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.