DOOFUS Meaning of DOOFUS in English [ 'du:fʌs ](also dufus ) ■ noun ( plural ~es ) N. Amer. informal a stupid person.Origin1960s: perh. an alt. of goofus , or from Scots doof 'dolt'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004