Smudgey

[T]he only resident servant was a sixteen-year-old runner of small errands. A girl always down at the heels, with a smudgey face, rough hair, flyaway cap, and dirty apron.

Source: wiktionary

Incidentally, most of the carbons we see are mighty poor copies of an original that may well be a cause of editorial eye strain. Often they are smudgey, or so pale and faded they cannot be read at night.

Source: wiktionary

The silly grin on his smudgey face revealed that he had a big, dark hole in his mouth where one front tooth should have been.

Source: wiktionary