Nincompoop (Unknown Origin)

Nincompoop.

Where in the world did that word come from?

My dictionary says "origin unknown." I hate that. If anyone knows where this word came from, please let me know!

Nincompoop. I have to say it sounds French. Or Faux French. I would venture a guess that it is a mispronunciation of another more arrogant word, maybe noncompliant, or nonconformist? My best guess would be that it comes from incompetant or non-competant.

It means fool or idiot. I think it is related to ninny, and possibly to nitwit and dimwit, other synonyms.