dormant

1 being in a state of suspended consciousness the bears lay dormant in their den during the winter Synonyms asleep, dozing, napping, resting, sleeping, slumberingRelated Words drowsy, nodding, sleepy, slumberous (or slumbrous), somnolent; dreaming, reposing; hypnotized, mesmerized; comatose, semiconscious; sleepwalking, somnambulantNear Antonyms aware, conscious; sleepless; aroused, astir, awakened, roused, up, wakened; reawakened, revivedAntonyms awake, sleepless, wakeful, wide-awake

2 not being in a state of use, activity, or employment the engine lay dormant in the garage until we found a use for it Synonyms dead, inactive, fallow, free, idle, inert, inoperative, latent, off, unused, vacantRelated Words abeyant, arrested, interrupted, suspended; unoccupied; asleep, comatose, lifeless, moribund, quiescent, sleepy; inoperable, unusable, unworkable, useless; dull, slowNear Antonyms functional, operable, operational, workable; assiduous, industrious, sedulous; energetic, vigorous; feasible, practical, usable (also useable), useful, viableAntonyms active, alive, busy, employed, functioning, going, living, on, operating, operative, running, working