Nincompoop

Grammar

This term is a noun.

Etimology of Nincompoop

(You may find nincompoop at the world legal encyclopedia and the etimology of more terms).

1670s, nicompoop. Despite similarity [noted by Johnson] to Latin legal phrase non compos mentis “insane, mentally incompetent” (c. 1600), the connection is denied by etymologists because the earliest forms lack the second -n-. Weekley thinks first element may be a proper name, and cites Nicodemus, which he says was used in French for “a fool,” or Nicholas. Klein says probably an invented word.