grungePronunciation: /grʌn(d)ʒ/Translate grunge | into French | into German | into Italian Definition of grunge noun [mass noun] 1 informal grime; dirt. 2 (also grunge rock) a style of rock music characterized by a raucous guitar sound and lazy vocal delivery. the fashion associated with grunge rock, including loose, layered clothing and ripped jeans. Derivatives grunginess noun grungy adjective (grungier, grungiest)Origin: 1960s: back-formation from grungy, perhaps suggested by grubby and dingygrunge in other Oxford dictionaries Definition of grunge in the US English dictionary