manky
adj.— «The actual shoeshine process is super easy, but you’ll add some time if your shoes are really manky. If you’ve been walking in the rain a bit, then you’re probalby gonna have manky shoes.» —“5-minute shoeshine” by Brendon Connelly Slacker Manager (Portland, Ore.) Apr. 5, 2005. (source: Double-Tongued Dictionary)