begrime
bemud
besmoke
bog
bog down
dirt
dirty
dirty up
dust
grime
mire
muck
muck up
mudd
muddy
sink in
slime
smoke
soot
stodge
alter
change
modify
blemish
contaminate
crock
foul
mud
muddy up
pollute
smear
splash
spot
bemired
bemires
bemiring