case-hardened

apathetic careless cold-blooded heartless indifferent insensitive uncaring unsympathetic

hardened indurated inured toughened unbending

blind to cold deaf to hard hard-bitten hard-boiled hardhearted impassive impenitent inflexible insensate insensible insentient obdurate soulless spiritless stiff stony stubborn thick-skinned torpid tough unaffected uncompassionate unconcerned unfeeling unimpressionable unresponsive unsusceptible

caring compassionate concerned feeling interested kind merciful mindful nice responsive sympathetic

sensitive tender

coldhearted seasoned

accustomed benumbed callous habituated indurated inured prepared steeled toughened unbending

contemptuous cruel disdainful hard as nails hard-bitten hard-boiled hardhearted heartless impenetrable impious inaccessible irreverent obdurate obtuse resistant unashamed uncaring uncompassionate unemotional unrepenting unsubmissive

compassionate feeling kind nice sympathetic