Grungy

Adjective

 * 1) Dirty; shabby; in disrepair.

Thesaurus
dingy, dirty, dusty, grimy, grubby, messy, miry, muddy, scruffy, slovenly, smirchy, smoky, smudgy, smutchy, smutty, snuffy, sooty, untidy

Etymology
Probably a, influenced by grimy: