Synonyms of soulless

1 Syllable
cruel, cold
2 Syllables
undead, feral, callous, azoic, heartless
3 Syllables
insentient, pitiless, subhuman, mineral
4 Syllables
case-hardened, nonanimal
5 Syllables
insensitive, casehardened, inanimate, exanimate, nonvegetable