1. in a way that is honest and accurate; without lying or deception

Examples

• She answered all the questions truthfully during the interview.
• I can truthfully say that I’ve never seen anything like it before.
• The witness testified truthfully about what he had observed.
• Truthfully, I don’t think this plan will work.
• He spoke truthfully about his mistakes and apologized.
• The reporter promised to cover the story truthfully and fairly.