Grungy Definition Meaning - YourDictionary Dirty, messy, disreputable, etc ; unpleasant in any way In a dirty, rundown, or inferior condition Grungy old jeans Of or relating to grunge music When you're wearing your blazer with jeans, don't slap on your grungy sneakers Who it sounds like Cool Hand Luke are slightly grungy and heavy, slightly poppy and slightly experimental