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. No one has any solid idea where it came from, and anyone who claims otherwise is, well, a nincompoop. By definition, nincompoops are dumb, foolish, and can't do anything right. But there are far worse things you could call someone who's behaving like an idiot. Maybe this old-timey insult deserves a revival?

Definitions of nincompoop
  1. noun
    a stupid foolish person
    synonyms: ninny, poop
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    type of:
    simple, simpleton
    a person lacking intelligence or common sense
Word Family