[verb] become fixed or established; "indurated customs"
[verb] make hard or harder; "The cold hardened the butter" Synonyms:harden
[verb] become hard or harder; "The wax hardened" Synonyms:harden
[verb] cause to accept or become hardened to; habituate; "He was inured to the cold" Synonyms:inure, harden
[adjective] emotionally hardened; "a callous indifference to suffering"; "cold-blooded and indurate to public opinion" Synonyms:callous, thick-skinned, pachydermatous