"duffer" in German duffer Niete Dummkopf Viehdieb Detailed translations for "duffer" duffer 1. pejorative duffer(also: dweeb, blank) die Niete{feminine} Sorry, dude, but you're a duffer like me. Source: opensubtitles.org Corpus by OPUS Request review Sorry, Alter, aber du bist genau so eine Niete wie ich. duffer(also: ass, hardhead, loggerhead, thickhead) der Dummkopf{masculine} 2. colloquial duffer(also: cattle stealer, cattle rustler, rustler) der Viehdieb{masculine}