Answer: halfwit

AnswerCrossword Clue
HALFWITDummkopf
HALFWITOne who's not all there?
HALFWITDodo
HALFWITDolt
HALFWITDunderhead
HALFWITDunce
halfwitan idiot (a mentally deficient person)
halfwitfoolish person