intrepidity
  無畏,勇猛,大膽
  In·tre·pid·i·ty n.  The quality or state of being intrepid; fearless bravery; courage; resoluteness; valor.
     Sir Roger had acquitted himself of two or three sentences with a look of much business and great intrepidity.   --Addison.
  Syn: -- Courage; heroism; bravery; fortitude; gallantry; valor. See Courage, Heroism.
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  intrepidity
       n : resolute courageousness [syn: dauntlessness]