The Collaborative International Dictionary of English v.0.48:

abulia \abulia\ n.
   An abnormally intense inability to make decisions; severe
   irresolution.

   Syn: indecision, indecisiveness, irresolution
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

abulia
    n 1: a loss of will power [syn: abulia, aboulia]

Moby Thesaurus II by Grady Ward, 1.0:

76 Moby Thesaurus words for "abulia":
   abstraction, alienation, anxiety, anxiety equivalent,
   anxiety state, apathy, arteriosclerotic psychosis,
   catatonic stupor, certifiability, compulsion, cowardice, dejection,
   dementia paralytica, depression, detachment, dipsomania,
   drug addiction, elation, emotionalism, euphoria, faintheartedness,
   faintness, fear, feeblemindedness, feebleness, folie du doute,
   frailty, functional psychosis, general paralysis, general paresis,
   hypochondria, hysteria, hysterics, indifference, infirmity,
   insensibility, lethargy, mania, melancholia, mental distress,
   metabolic psychosis, moral insanity, neurosis, obsession,
   organic psychosis, paralytic dementia, pathological drunkenness,
   pathological indecisiveness, pliability, preoccupation,
   presenile dementia, prison psychosis, psychalgia,
   psychomotor disturbance, psychopathia, psychopathia sexualis,
   psychopathic condition, psychopathic personality, psychopathy,
   psychosis, senile dementia, senile psychosis, senility,
   sexual pathology, situational psychosis, spinelessness, stupor,
   syphilitic paresis, tic, toxic psychosis, twitching,
   unresponsiveness, weak will, weak-mindedness, weakness,
   withdrawal