cal·lous
[kal-uh’s]

adjective
1. made hard; hardened.

2. insensitive; indifferent; unsympathetic: They have a callous attitude toward the sufferings of others.

3. having a callus; indurated, as parts of the skin exposed to friction.


verb (used with object), verb (used without object)
4. to make or become hard or callous.

Synonyms
1.   hard. 2.   inured, insensible, obtuse. See hard.

Antonyms
1.   soft. 2.   sensitive.