Source : Webster's Revised Unabridged Dictionary (1913)

Self-confidence \Self`-con"fi*dence\, n.
   The quality or state of being self-confident; self-reliance.

         A feeling of self-confidence which supported and
         sustained him.                           --Beaconsfield.

Source : WordNet®

self-confidence
     n : freedom from doubt; belief in yourself and your abilities;
         "his assurance in his superiority did not make him
         popular"; "after that failure he lost his confidence";
         "she spoke with authority" [syn: {assurance}, {self-assurance},
          {confidence}, {authority}, {sureness}]