Grunge Originated.

The word grunge is believed to be a back-formation from the US slang adjective grungy, which originated in about 1965 as a slang term for "dirty" or "filthy". Mark Arm, the vocalist for the Seattle band Green River—and later Mudhoney—is generally credited as being the first to use the term grunge to describe this sort of music. Arm first used the term in 1981, when he wrote a letter under his given name Mark McLaughlin to the Seattle zine, Desperate Times, criticizing his band Mr. Epp and the Calculations as "Pure grunge! Pure noise! Pure shit!" Clark Humphrey, editor of Desperate Times, cites this as the earliest use of the term to refer to a Seattle band, and mentions that Bruce Pavitt of Sub Pop popularized the term as a musical label in 1987–88, using it on several occasions to describe Green River. Arm said years later, "Obviously, I didn't make [grunge] up. I got it from someone else. The term was already being thrown around in Australia in the mid-'80s to describe bands like King Snake Roost, The Scientists, Salamander Jim, and Beasts of Bourbon."[4] Arm used grunge as a descriptive term rather than a genre term, but it eventually came to describe the punk/metal hybrid sound of the Seattle music scene.