The Collaborative International Dictionary of English v.0.48:

anaesthetized \anaesthetized\ adj.
   1. rendered insensible by means of anesthesia. [Also spelled
      anesthetized.]
      [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

anesthetized \anesthetized\ adj.
   rendered insensible by anesthetizing. Same as
   anaesthetized. [Also spelled anaesthetized.]
   [WordNet 1.5 +PJC]

Moby Thesaurus II by Grady Ward, 1.0:

95 Moby Thesaurus words for "anesthetized":
   affectless, arctic, asleep, autistic, benumbed, blunt, cataleptic,
   catatonic, chill, chilly, cold, cold as charity, cold-blooded,
   coldhearted, comatose, cool, dead, deadened, dispassionate, doped,
   dozy, dreamy, drowsy, drugged, drugged with sleep, dull,
   emotionally dead, emotionless, frigid, frosted, frosty, frozen,
   half asleep, heartless, heavy, heavy with sleep, heavy-eyed, icy,
   immovable, impassible, impassive, in a stupor, inexcitable,
   insensible, insensitive, insusceptible, languid, lethargic,
   napping, narcoleptic, narcose, narcotized, narcous, nodding,
   nonemotional, numbed, objective, obtuse, oscitant, out of it,
   out of touch, passionless, sedated, self-absorbed, senseless,
   sleep-drowned, sleep-drunk, sleep-filled, sleep-swollen, sleepful,
   sleepy, slumberous, slumbery, snoozy, somnolent, soporific,
   soulless, spiritless, stretchy, stuporose, stuporous,
   unaffectionate, unemotional, unfeeling, unimpassioned,
   unimpressionable, unloving, unpassionate, unresponding,
   unresponsive, unsusceptible, unsympathetic, untouchable, yawning,
   yawny