Definitions

1. noun

A careless or unintentional mistake, especially a foolish or embarrassing one.

“He made a blunder by forgetting his lines during the play.”

2. verb

To make a careless or unintentional mistake, especially a foolish or embarrassing one.

“She blundered through the obstacle course without falling over.”

3. verb

To go or move clumsily or awkwardly.

“He blundered through the crowded room, bumping into people.”