callous
[kal-uhs]
adjective
1. made hard; hardened
2. insensitive; indifferent; unsympathetic
3. having a callus; indurated, as parts of the skin exposed to friction
verb (used with or without object)
4. to make or become hard or callous
Synonyms
hard, inured, insensible, obtuse
Antonyms
soft, sensitive