nincompoop → Idiot, Tor.

Where does the term nincompoop come from?

“Nincompoop,” meaning fool or idiot, was traced back to its first usage in the 1670s by Jonson in his Dictionary of 1755. He believed the word to have come from the Latin legal term, “non compos mentis”, which translates to insane or mentally incompetent or not of sound mind.

What does nincompoop mean?

Calling someone a nincompoop is like calling them a fool, idiot, bonehead, or dope. It's definitely not a compliment. Nincompoop is a silly-sounding word that's also kind of old-fashioned, like ninny. ... But there are far worse things you could call someone who's behaving like an idiot.