smudgy

smudgy
    adj 1: smeared with something that soils or stains; these words
           are often used in combination; "oil-smeared work
           clothes"; "hostile faces smirched by the grime and rust"-
           Henry Roth; "ink-smudged fingers"
    

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