analgesia

analgesia
    n 1: absence of the sense of pain without loss of consciousness
    

analgesia \an`al*ge"si*a\ ([a^]n`[a^]l*j[=e]"z[-e]*[.a]), n.
   [NL., fr. Gr. 'analghsi`a; 'an priv. + a`lghsis sense of
   pain.] (Med.)
   Absence of sensibility to pain. --Quain. AS
   [1913 Webster]
    

58 Moby Thesaurus words for "analgesia":
      abatement, allayment, alleviation, anesthesia, anesthetizing,
      anxiety equivalent, appeasement, assuagement, callousness,
      deadening, deadness, depraved appetite, diminishment, diminution,
      dulling, dullness, ease, easement, easing, electronarcosis,
      impassibility, imperception, imperceptiveness, imperceptivity,
      impercipience, inconsiderateness, insensibility, insensibleness,
      insensitiveness, insensitivity, insentience, lessening, lulling,
      mitigation, mollification, narcosis, narcotization, neurasthenia,
      numbing, numbness, obtuseness, palliation, paresthesia, parorexia,
      pica, pins and needles, reduction, relief, remedy, salving,
      softening, soothing, speech abnormality, subduement, thick skin,
      unfeeling, unfeelingness, unperceptiveness