nincompoop
noun /ˈnɪŋkəmpuːp/
/ˈnɪŋkəmpuːp/
(old-fashioned, informal)- a stupid personTopics Personal qualitiesc2Word Originlate 17th cent.: perhaps from the given name Nicholas or from Nicodemus (by association with the Pharisee of this name, and his naive questioning of Christ; compare with French nicodème ‘simpleton’).