noun
- a foolish or stupid person
Usage: informal
Examples
- Don’t be such a nincompoop and forget your keys again.
- He felt like a nincompoop after realizing his mistake.
- The nincompoop drove the wrong way down a one-way street.
- She called him a nincompoop for believing such an obvious lie.
- Only a nincompoop would try to fix electrical wiring without turning off the power.
- The movie’s villain was portrayed as a bumbling nincompoop.