| verb | dirty with mud |
| verb | cause to become muddy “These data would have muddied the prediction” |
| verb | make turbid “muddy the water” |
| adjective | (of soil) soft and watery “the ground was boggy under foot” |
| adjective | dirty and messy; covered with mud or muck “muddy boots” |
| adjective | (of color) discolored by impurities; not bright and clear; is often used in combination “dirty” |
| adjective | (of liquids) clouded as with sediment “a cloudy liquid” |
| bog | noun | wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for cultivation but can be cut and dried and used for fuel |
| marsh | noun | low-lying wet land with grassy vegetation; usually is a transition zone between land and water |
| mire | noun | a soft wet area of low-lying land that sinks underfoot |
| mud | noun | water soaked soil; soft wet earth |
| muddiness | noun | the wetness of ground that is covered or soaked with water |
| quag | noun | a soft wet area of low-lying land that sinks underfoot |
| sloppiness | noun | the wetness of ground that is covered or soaked with water |
| slop | noun | deep soft mud in water or slush |
| slough | noun | a hollow filled with mud |
| sogginess | noun | a heavy wetness |
| swamp | noun | low land that is seasonally flooded; has more woody plants than a marsh and better drainage than a bog |
| muck | noun | any thick, viscous matter |
| dinge | noun | discoloration due to dirtiness |
| dinginess | noun | discoloration due to dirtiness |
| cloudiness | noun | the quality of being cloudy |
| murk | noun | an atmosphere in which visibility is reduced because of a cloud of some substance |
| murkiness | noun | the quality of being cloudy |
| turbidness | noun | muddiness created by stirring up sediment or having foreign particles suspended |
| turbidity | noun | muddiness created by stirring up sediment or having foreign particles suspended |