If something is grungy, it’s dirty or it’s dirty and old.
The jeans he’s wearing look grungy.
I need a shower. I feel kind of grungy after working in the garden all morning.
That old guy looks really grungy.
He lives in a grungy apartment.
The neighborhood they live in is kind of grungy.
My friend, Steve, likes to visit grungy old cities in the midwest.
The people who hangout at that bar look grungy.
The club they’re playing at is old and grungy.
Note: The word "grunge" is an adjective for music in the style of Nirvana, Soundgarden, and other post-punk bands that blended heavy metal and punk music in the 1990s.