noun
- a person who is silly, stupid, or incompetent
Usage: informal; slang; often considered mildly offensive or derogatory
Examples
- He forgot his keys again—what a dufus!
- Don't be such a dufus and just follow the instructions.
- That dufus drove the wrong way down a one-way street.
- I felt like a dufus when I showed up to the party on the wrong day.
- My brother is always doing dufus things like leaving his phone in the fridge.