1. foolish or silly, especially in a self-satisfied way

Examples

• His fatuous grin showed he had no idea how inappropriate his comment was.
• The politician’s fatuous remarks about the crisis angered many voters.
• She made a fatuous attempt to explain quantum physics without any real understanding.
• The movie was full of fatuous dialogue that made the audience cringe.
• His fatuous belief that he could become famous overnight was quickly shattered.
• The committee rejected her fatuous proposal without discussion.