Synonyms of uncaring

1 Syllable
cool, cold, blasé
2 Syllables
thoughtless, unkind, heedless, unthought, listless, callous, aloof, stoical, heartless
3 Syllables
unsocial, impervious, detached, passionless, feelingless, hardened, unmoved, unstirred, uncordial, coldhearted, hardhearted, nonchalant, hardboiled, unthoughtful, hot-headed, neglectful, asocial, cold-hearted, unpitying, unthinking, uneager, unfeeling
4 Syllables
ironhearted, unimpressed, unaroused, unamiable, unexcited, indifferent, inadvertent, uninvolved, unmerciful, uninclined, unconcerned, case-hardened
5 Syllables
disinterested, unemotional, insusceptible, unsympathetic, unimpressible, insensitive, unsympathizing, casehardened, disimpassioned, dispassionate, irreflective, uncharitable
6 Syllables
uncompassionate