Synonyms of sluggish

1 Syllable

stiff, weak, blah, slow, down, dull, off, slack

2 Syllables

drony, fainéant, pokey, slowest, faineant, stagnant, stupid, lumpish, leaden, inert, laid-back, drowsy, desk-bound, dormant, drowsier, dopy, tardy, torpid, dopey, dragging, slowgoing, sleepy, nodding, dopier, sullen, duller, languid, drowsiest, dullest, drippy, draggier, draggy, slothful, mopish, dozy, sluggard, heavy, weakest, snoozy, bloodless, mooney, slower, dozier, deskbound, tardier, listless, desker, weaker, sleepier

3 Syllables

stupidest, fatheaded, inconscious, lifeless, stuporous, thick-headed, slumbery, languorous, sleepyhead, slumberous, phlegmatic, somnific, mothballed, lymphatic, lethargic, weakened, indolent, languishing

4 Syllables

unreactive, sedentary, apathetic, dilatory, inactive, somniferous, somnifacient, comatose, moratory, sleepyheaded

5 Syllables

unresponsive, unexcitable, tortoiselike, hebetudinous