"dirty appearance" is a correct and usable phrase in written English.
You could use it to describe something as being visually unclean. For example, "The animal's dirty appearance suggested that it had not been groomed recently."
4. Dirty denim tint: A wash that gives jeans a dirty appearance.
The censors, L. Veturius and P. Licinius, compelled M. Livius, who had been banished, on his restoration to the city, to be shaved, and to lay aside his dirty appearance (tonderi et squalorem deponere), and then, but not till then, to come into the senate, &c.
The press had frequently mocked previous meetings of working men because of their ragged, dirty appearance and disorganised conduct.
Ninety-nine per cent of the time he had a dirty appearance and looked like he had been working on a car".
Black specks, or a dirty appearance inside the ears, can also indicate ear mites are present.
If you're not careful, these can settle on your car, giving it a "dirty" appearance that can be hard to get off.
That made the ocean near land both significantly colder and dirtier in appearance.
Appearance Dirty stopout.
They found that the women would not drink the water or give it to their children because of its "unpleasant taste, dirty or yellow appearance, excessive iron, and/or general contamination".
Finish the look by smearing yourself with red or brown eye makeup, to give a dirty or bloody appearance.
When I panted, "Are you OK?" (which I knew he wasn't) he emphatically yelped "No!" The opening was a success, it seemed, with its Chinese, Chilean and everything-else mix, and then Alfredo made his late appearance, dirtier than ever, and his incredibly accurate "Type 54/Dshk" machine gun simulation was installed just as that phase of the night came to a close.
