callous

verbs

make insensitive or callous; deaden feelings or morals
callous, cauterise, cauterize

adjectives

emotionally hardened
"a callous indifference to suffering"; "cold-blooded and indurate to public opinion"
callous, indurate, pachydermatous
is derived from
callosity
is derived from
callousness
having calluses; having skin made tough and thick through wear
"calloused skin"; "with a workman's callous hands"
callous, calloused, thickened
is derived from
callosity