Jagoff or jag-off is an American English derogatory slang term from Pittsburghese meaning a person who is stupid or inept. It is most prominent in the Pittsburgh area and Pennsylvania in general, along with wide use in the City of Chicago, particularly in the Irish taverns.

What is jagoff slang for?

A jagoff is a jerk, idiot, or really any kind of irritating or unlikeable person, not unlike douchebag. It's closely associated with the city of Pittsburgh, ya jagoff.

Is jagoff a real word?

“Jagoff,” is officially defined as: “(chiefly in western Pennsylvania) a stupid, irritating, or contemptible person.” The entry goes on to explain the origin of the word, as “from jackoff, perhaps influenced by jag.”