grimy

from WordNet (r) 3.0 (2006)

grimy
    adj 1: thickly covered with ingrained dirt or soot; "a miner's
           begrimed face"; "dingy linen"; "grimy hands"; "grubby
           little fingers"; "a grungy kitchen" [syn: {begrimed},
           {dingy}, {grimy}, {grubby}, {grungy}, {raunchy}]

from The Collaborative International Dictionary of English v.0.48

Grimy \Grim"y\, a. [Compar. {Grimier}; superl. {Grimiest}.]
   Full of grime; begrimed; dirty; foul.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

23 Moby Thesaurus words for "grimy":
      besmirched, blotchy, dingy, dirty, dusty, fuliginous, grubby,
      grungy, messy, miry, muddy, murky, scruffy, slovenly, smirched,
      smirchy, smoky, smudgy, smutchy, smutty, snuffy, sooty, untidy

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