callous

Adjective

• having calluses; having skin made tough and thick through wear
  • calloused skin
    
  • with a workman's callous hands
    

• emotionally hardened
  • a callous indifference to suffering
    
  • cold-blooded and indurate to public opinion
    

Verb

• make insensitive or callous; deaden feelings or morals

Related words

• Synonyms: 
  calloused , thickened , indurate , pachydermatous , cauterize , cauterise