indurate

Adjective

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

Verb

• cause to accept or become hardened to; habituate
  • He was inured to the cold
    

• become hard or harder
  • The wax hardened
    

• make hard or harder
  • The cold hardened the butter
    

• become fixed or established
  • indurated customs
    

Related words

• Synonyms: 
  callous , pachydermatous , inure , harden