Synonyms of hard-hearted

1 Syllable
mean, hard, firm, tough, cruel, harsh
2 Syllables
crueler, ruthless, cruelest, mulish, unkind, rigid, iron, bullhead, fixed, callous, aloof, heartless, dogged
3 Syllables
unyielding, stiff-necked, thick-skinned, hard-nosed, adamant, unfeeling, cold-hearted, relentless, cold-blooded, hard-boiled, unbending, perverse
4 Syllables
immovable, unbothered, stony-hearted, remorseless, implacable, unrelenting, unshakable, obdurate, obstinate, inflexible, indurate, unconcerned, stonyhearted, unrepenting
5 Syllables
uncompromising, uninterested, unemotional, inexorable, unimpressible, unsympathetic
6 Syllables
uncompassionate, uncooperative