grimy

Short definition from Wiktionary

Adjective

1. 1
   Stained or covered with grime.
2. 2
   From the urban musical genre called grime.
3. 3
   Morally corrupt, malicious, vile, or selfish; base or dirty; rotten.
4. 4
   Of a beat or song, darkly atmospheric; having affinities with the style of the East Coast hip hop of the 90s, especially that of New York.