lifeless (adj.)

• abeyant
• abiotic
• apathetic
• arid
• asleep
• azoic
• bare
• barren
• benumbed
• blank
• blase
• bleak
• bloodless
• bored
• boring
• breathless
• cataleptic
• catatonic
• characterless
• cold
• colorless
• dead
• deadened
• debilitated
• deceased
• defunct
• departed
• desolate
• dismal
• dopey
• dormant
• drab
• dreary
• droopy
• drugged
• dry
• dull
• dumb
• dusty
• effete
• elephantine
• empty
• enervated
• etiolated
• exanimate
• extinct
• fallen
• finished
• flat
• foul
• gone
• groggy
• heavy
• ho-hum
• hollow
• inactive
• inane
• inanimate
• inert
• insensate
• insensible
• insentient
• insipid
• jaded
• jejune
• lackadaisical
• lackluster
• languid
• languorous
• late
• latent
• leaden
• lethargic
• listless
• logy
• low-spirited
• lumpish
• lusterless
• mat
• moribund
• mute
• nonconscious
• nonliving
• numb
• pale
• pallid
• passive
• pedestrian
• phlegmatic
• plodding
• pointless
• poky
• ponderous
• prosaic
• prosy
• released
• sainted
• sated
• sedentary
• senseless
• slack
• sleeping
• sleepy
• slow
• sluggish
• smoldering
• solemn
• somber
• somnolent
• soulless
• spiritless
• stagnant
• stale
• standing
• static
• sterile
• stiff
• still
• stillborn
• stodgy
• stuffy
• superficial
• supine
• suspended
• tame
• tasteless
• tedious
• tiresome
• torpid
• unanimated
• unconscious
• unfeeling
• uninhabited
• uninteresting
• unmoving
• unoccupied
• vapid
• vegetative
• wan
• waste
• weary
• wooden
• world-weary