Examples of use of nincompoop
1. In other words, I came across as a complete nincompoop.
2. Lord Stratford has a charitable explanation for TB‘s portrait shyness: Blair is scared that the media would paint him as a vain nincompoop if he was found sitting for his portrait at a moment of crisis.
3. No–one expects Boris to drop his impression of a plummy–voiced nincompoop, but the wild hair will be smoothed back more in the style of conventional young Tories seeking office, and the wisecracks and clowning are to be reduced, but not to zero, otherwise it wouldn‘t be Boris, would it?
4. Like Hurndall, who courted this form of martyrdom, writing "it‘s part of the job to be as visible as possible", Kember thought it his mission to help Iraqi citizens "by getting in the way". After his rescue, Kember was described as "doddering", "a silly old sod", a "reckless old fool", and a nincompoop.