1.(of soil) soft and watery;
the ground was boggy under foot
2.dirty and messy; covered with mud or muck;
muddy boots
3.(of color) discolored by impurities; not bright and clear;
dirty is often used in combination
4.(of especially liquids) clouded as with sediment;
a cloudy liquid
1.dirty with mud
2.cause to become muddy;
These data would have muddied the prediction
3.make turbid;
muddy the water