Meaning & Definition of word "Blunder"

noun:

• 1. a stupid or careless mistake.
  • Example: His decision to invest in the failing company was a major blunder.
• 2. a serious or embarrassing mistake.
  • Example: The diplomat's blunder during the negotiations nearly derailed the peace talks.
• 3. a clumsy or careless act.
  • Example: She laughed off her blunder when she spilled coffee on her shirt during the meeting.

verb:

• 1. to make a mistake, typically a silly or careless one.
  • Example: He blundered by forgetting to send the important email.
• 2. to move or act clumsily or blindly.
  • Example: They blundered through the dark room, trying not to bump into anything.