self-doubt

from WordNet (r) 3.0 (2006)

self-doubt
    n 1: lack of self-confidence [syn: {diffidence}, {self-doubt},
         {self-distrust}] [ant: {confidence}]

from Moby Thesaurus II by Grady Ward, 1.0

33 Moby Thesaurus words for "self-doubt":
      Pyrrhonism, apprehension, diffidence, distrust, distrustfulness,
      doubt, doubtfulness, dubiety, dubiousness, half-belief,
      lack of self-confidence, lack of self-reliance, leeriness,
      misdoubt, misgiving, mistrust, mistrustfulness, question, scruple,
      scrupulousness, self-depreciation, self-detraction, self-distrust,
      self-effacement, shadow of doubt, skepticalness, skepticism,
      suspicion, suspiciousness, total skepticism, uncertainty, wariness,
      weak ego