Synonyms of apathetic

1 Syllable

numb, stoic, blah, slow, neb, cold, blasé, cool, flat

2 Syllables

offish, slowest, blase, moony, thoughtless, inert, laid-back, lazy, torpid, laziest, tepid, languid, lazier, sluggish, wimpy, stretchy, draggy, stoical, mopish, snoozy, mooney, slower, shiftless, listless, stolid, callous

3 Syllables

half-hearted, unmoved, unstirred, unthoughtful, hot-headed, unpitying, unsocial, uncurious, nonchalant, stuporous, asocial, unwatchful, halfhearted, uncordial, untouched, languorous, sleepyhead, phlegmatic, unready, unfeeling, lymphatic, slow-moving, lethargic, passive, spiritless

4 Syllables

perfunctory, directionless, unreactive, unexcited, aversive, disentranced, unconcerned, unperceiving, unobserving, ironhearted, impassive, insensate, unaroused, unimpressed, unamiable, unlively, unpassioned, matter-of-fact, emotionless, case-hardened, energyless, unambitious, unindustrious, insensible, indifferent, sleepyheaded, nonresistant, undiscerning

5 Syllables

uninterested, unemotional, unresponsive, unimpressible, unsympathetic, casehardened, inattentive, lackadaisical, unexcitable, inexcitable, unidealistic, unimpassioned, unsentimental, tortoiselike, unenergetic, disimpassioned, hebetudinous, unmotivated

6 Syllables

uncompassionate, undemonstrative