The river is dirty after the storm.

Not clean; containing dirt or pollutants.
The air feels dirty in the city.
Her hands were dirty from playing outside.
The beach was dirty after the holiday weekend.
dirty water
dirty air
dirty environment
unclean
polluted
filthy
The floor is dirty.

Not clean; marked by the presence of dirt or stains.
Her hands are dirty.
The car looks dirty after the rain.
He wore a dirty shirt.
dirty dishes
dirty clothes
dirty water
unclean
filthy
grimy
My hands are dirty after playing outside.

Not clean; covered with dirt or stains.
The floor is dirty after the party.
Her shirt got dirty in the mud.
The car looks dirty from the rain.
dirty dishes
dirty laundry
dirty hands
filthy
soiled
grimy