comatose

comatose
    adj 1: relating to or associated with a coma; "comatose
           breathing"; "comatose state"
    2: in a state of deep and usually prolonged unconsciousness;
       unable to respond to external stimuli; "a comatose patient"
    

Comatose \Co"ma*tose`\ (? or ?; 277), a. [From {Coma} lethargy.]
   Relating to, or resembling, coma; drowsy; lethargic; as,
   comatose sleep; comatose fever.
   [1913 Webster]
    

106 Moby Thesaurus words for "comatose":
      Laodicean, Olympian, aloof, anesthetic, anesthetized, apathetic,
      asleep, benumbed, blah, blase, cataleptic, catatonic, cold, dead,
      dead asleep, deep asleep, desensitized, detached, disinterested,
      doped, dopey, dormant, dozy, dreamy, drowsy, drugged,
      drugged with sleep, dull, fast asleep, flaked-out, half asleep,
      half-conscious, heartless, heavy, heavy with sleep, heavy-eyed,
      hebetudinous, hopeless, impassible, in a stupor, indifferent,
      insensitive, insouciant, languid, lethargic, listless, napping,
      narcoleptic, narcose, narcotized, narcous, nirvanic, nodding,
      nonchalant, numb, numbed, oblivious, oscitant, out, out cold,
      out of it, passive, phlegmatic, pluckless, resigned, sedated,
      semiconscious, senseless, slack, sleep-drowned, sleep-drunk,
      sleep-filled, sleep-swollen, sleepful, sleeping, sleepy, sluggish,
      slumbering, slumberous, slumbery, snoozy, somnolent, soporific,
      sound asleep, spaced out, spiritless, spunkless, stoic, stoned,
      stretchy, strung out, stupefied, stupid, stuporose, stuporous,
      supine, torpid, uncaring, unconcerned, unconscious, uninterested,
      withdrawn, yawning, yawny, zonked, zonked out