Search Result for "self-doubt": 
Wordnet 3.0

NOUN (1)

1. lack of self-confidence;
[syn: diffidence, self-doubt, self-distrust]



WordNet (r) 3.0 (2006):

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