Synonyms of inactive

1 Syllable

limp, blah, slow, neb, lax, calms, still, quiet, down, calm, dull, old, slack

2 Syllables

eldest, drony, fainéant, slowest, restful, faineant, stormless, windless, stagnant, inert, desk-bound, stable, dormant, calmer, latent, idle, torpid, jobless, azoic, extinct, slowgoing, sleepy, nodding, quiescent, neutral, static, languid, sluggish, oldish, asleep, stretchy, draggy, low-key, slothful, dozy, sleeping, snoozy, mooney, calmest, slower, dozier, deskbound, abeyant, stolid, desker, sleepier

3 Syllables

slumbering, vestigial, waveless, unemployed, stuporous, bystanding, insentient, somnolent, unanxious, mineral, ossified, gray-haired, languorous, diplegic, slumbery, sleepyhead, slumberous, unused, somnific, do-nothing, mothballed, motionless, gridlocked, leisured, unapplied, lymphatic, lethargic, geriatric, passive, indolent

4 Syllables

unreactive, sedentary, reposeful, non-combatant, uninvolved, middle-of-road, nonanimal, paraplegic, paralyzed, recessive, quadriplegic, noncombatant, somniferous, somnifacient, disengaged, paralytic, unoccupied, immobile, underemployed, unengaged, sleepyheaded, unrealized, nonaligned

5 Syllables

nonbelligerent, exanimate, nonvegetable, inanimate, unexercised, tortoiselike, hebetudinous

6 Syllables

nonparticipating, inoperative