dif·fi·dence /ˈdɪfədən(t)s, fəˌdɛn(t)s/
  無自信,內向,羞怯
  Dif·fi·dence n.
  1. The state of being diffident; distrust; want of confidence; doubt of the power, ability, or disposition of others. [Archaic]
     That affliction grew heavy upon me, and weighed me down even to a diffidence of God's mercy.   --Donne.
  2. Distrust of one's self or one's own powers; lack of self-reliance; modesty; modest reserve; bashfulness.
     It is good to speak on such questions with diffidence.   --Macaulay.
     An Englishman's habitual diffidence and awkwardness of address.   --W. Irving.
  Syn: -- Humility; bashfulness; distrust; suspicion; doubt; fear; timidity; apprehension; hesitation. See Humility, and Bashfulness.
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  diffidence
       n : lack of self-confidence [syn: self-doubt, self-distrust]
           [ant: confidence]