1. to move or act in an awkward or confused way
2. to speak in a confused or unclear manner

Examples

• He bumbled through his presentation without any clear points.
• The new employee bumbled around the office looking for supplies.
• She bumbled her way through the difficult math problem.
• The politician bumbled his response to the reporter’s question.
• I bumbled through the recipe and somehow made it work.
• The actor bumbled his lines during the first rehearsal.