(noun) A mixture of water and soil or fine grained sediment.
"They muddy the water, to make it seem deep."
"Trying to understand is like straining through muddy water. Have the patience to wait! Be still and allow the mud to settle."
"Do you have the patience to wait until your mud settles and the water is clear?"
"Even in the mud and scum of things, something always, always sings."
"Muddy water, let stand, becomes clear."