Filthy with muck; miry; as, a mucky road.

(of soil) soft and watery; "the ground was boggy under foot"; "a marshy coastline"; "miry roads"; "wet mucky lowland"; "muddy barnyard"; "quaggy terrain"; "the sloughy edge of the pond"; "swampy bayous"

dirty and messy; covered with mud or muck; "muddy boots"; "a mucky stable"

Vile, in a moral sense; sordid.