1. mud
His name is mud.
They dug through mud and wet clay.
Tom jumped across the mud puddle.
In early days pioneers lived in houses made of mud and straw.
My least favorite season is mud season.
My mom looked funny with a mud mask on her face and rollers in her hair.
They arrived in Southern Rhodesia, and there was a choice of an immigrants' camp, consisting of mud huts with a communal water supply, or a hotel; and they chose the hotel, being what are known as people of means.
Come on, Joe. Don't be a stick in the mud. Go to the party with us! When you told Nancy how fat she is, you really hit her where it hurts.
The football pitch is more like mud than grass. I blame the rain.
Ace and his gang moved towards us in a line through the mud.
Espalmador has the famous mud baths
It is sadly the case that deep ruts filled with mud and water make such journeys very hazardous.
Leave your muddy wellingtons outside, please.
I tried this and that, blending yellow with white powders and obtaining brown, mixing crystals with powders and getting dust, combining liquids with solids and making mud.
2. silt
... is soiled with the silt that seems to be...
The river was cloudy with silt.
3. muck
You're treading muck into the carpet with your dirty shoes! a pile of dog muck
to muck up sb’s plans