Synonyms of ironhearted

1 Syllable
hard, tough, cruel, cold
2 Syllables
stony, ruthless, brutal, churlish, unkind, icy, surly, asleep, callous, heartless
3 Syllables
inhuman, feelingless, pitiless, hardened, thick-skinned, uncordial, benumbed, senseless, crotchety, severe, cold-hearted, uncaring, merciless, cold-blooded, deadened, exacting
4 Syllables
obdurate, sensationless, unamiable, insensible, cantankerous, apathetic, insensate
5 Syllables
unemotional, unsympathetic, insensitive, inanimate, anesthetized
6 Syllables
uncompassionate