diffident 2adjectivedomain: all adjPrinceton WordNet [ver.3.1]EnglishDefinitionlacking self-confidenceReport errorPath to highest hypernymMorphologySynset graphExamples1.stood in the doorway diffident and abashed2.problems that call for bold not timid responses3.a very unsure young manSynonymsshy 1lacking self-confidencetimid 2lacking self-confidenceunsure 1lacking self-confidence