From Longman Dictionary of Contemporary Englishdudedude /djuːd $ duːd/ noun [countable] American English 1 MAN informal a man a real cool dude2 COUNTRYSIDE old-fashioned an American man from a city, who is living in or visiting a farm or ranch
Examples from the Corpus
dude• Dude, check out that car.• But dude if I was to do speed man, it complete alienates me at a hundred percent.• There were a few really dense dudes Big Steve had to beat three times.• He is a dandy-looking dude too, with slick black ponytail and, always, a full-length mink coat.• He was like this old dude.• Come on dude, play your card.• This is the point where the sensible dude gets out and walks the rest of the way.Origin dude (1800-1900) Perhaps from German dude “stupid person” 