Synonyms of lethargic

1 Syllable

numb, limp, blah, slow, dull

2 Syllables

drony, slowest, moony, laid-back, drowsy, inert, dormant, drowsier, dopy, lazy, idle, torpid, nebbish, dopey, laziest, slowgoing, sleepy, drooping, nodding, dopier, languid, lazier, laggard, limper, drowsiest, sluggish, wimpy, draggier, stretchy, draggy, slothful, mopish, dozy, heavy, snoozy, mooney, slower, dozier, flagging, shiftless, listless, stolid, sleepier

3 Syllables

fatheaded, inconscious, incurious, uncurious, supine, stupefied, somnolent, slumbery, languorous, sleepyhead, slumberous, unconscious, phlegmatic, unready, somnific, mothballed, lymphatic, slow-moving, passive, spiritless, indolent

4 Syllables

directionless, apathetic, dilatory, impassive, inactive, somniferous, somnifacient, energyless, unambitious, comatose, unindustrious, indifferent, sleepyheaded, enervated

5 Syllables

unexcitable, lackadaisical, tortoiselike, unenergetic, debilitated