1. in a manner lacking confidence in oneself; shyly or modestly

Examples

• She diffidently raised her hand to ask a question in class.
• He spoke diffidently about his accomplishments, downplaying his role in the project.
• The new employee diffidently approached the manager to request feedback.
• She smiled diffidently when complimented on her artwork.
• He diffidently suggested an alternative approach to the problem.
• The student answered diffidently, unsure of whether her response was correct.