LETHARGIC

adj. 1 lethargical, sluggish, slow, dull, heavy, lazy, indolent, phlegmatic, slothful, idle, languid, languorous, listless, fainéant, inactive, torpid, stuporous, comatose; indifferent, apathetic They were so lethargic that they did absolutely nothing about it 2 weary, tired, fagged out, fatigued, enervated, weak, exhausted, drowsy, sleepy, somnolent I have a bad cold and feel very lethargic