callous in WordNet English dictionary

1. make insensitive or callous; deaden feelings or morals
   callous  cauterize  cauterise 
   

1. emotionally hardened
   "a callous indifference to suffering"; "cold-blooded and indurate to public opinion"
   callous  indurate  pachydermatous 
   
2. having calluses; having skin made tough and thick through wear
   "calloused skin"; "with a workman's callous hands"
   calloused  callous  thickened