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1. Emotionally hardened
   "a callous indifference to suffering";
   - indurate, pachydermatous
    
2. Having calluses; having skin made tough and thick through wear
   "with a workman's callous hands";
   - calloused, thickened

1. Make insensitive or callous; deaden feelings or morals
   - cauterize, cauterise [Brit]

Sounds like: callus, Callas

Derived forms: calloused, callouses, callousing

See also: insensitive, tough, toughened

Type of: enure, harden, indurate, inure

Encyclopedia: Callous