[adj] used of persons; emotionally hardened; "faced a case-hardened judge"
hard, hard-boiled, hardened
acclimated, acclimatized, accommodated, accustomed, adapted, adjusted, backed, balking, balky, bigoted, brazen, bulldogged, bulletheaded, bullheaded, calcified, callous, calloused, conditioned, conscienceless, crusted, crusty, crystallized, dogged, dogmat