a half-wit

(informal)

a stupid person Some half-wit had filled the kettle too full and water spilt out everywhere.

Name	Pronounced	Usage
Galadriel	gə-LAD-ree-əl (English)	Literature
Reilly	RIE-lee	English (Modern)
Zbignev	-	Medieval Slavic
Yelizaveta	ye-lee-zah-VYE-tah, ee-lee-zah-VYE-tah	Russian
Valentine	['væləntain]
Anders	AHN-desh (Swedish), AHN-ders (Swedish, Danish)	Swedish, Norwegian, Danish