muddy

verbs

dirty with mud
cause to become muddy
"These data would have muddied the prediction"
is a type of (narrower)
make unclear, indistinct, or blurred
"Her remarks confused the debate"; "Their words obnubilate their intentions"
make turbid
"muddy the water"
is a type of (narrower)
cause to change; make different; cause a transformation
"The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"

adjectives

(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"
is derived from
is derived from
dirty and messy; covered with mud or muck
"muddy boots"; "a mucky stable"
(of color) discolored by impurities; not bright and clear
"dirty" is often used in combination; "a dirty (or dingy) white"; "the muddied grey of the sea"; "muddy colors"; "dirty-green walls"; "dirty-blonde hair"
is derived from
(of liquids) clouded as with sediment
"a cloudy liquid"; "muddy coffee"; "murky waters"
is derived from