Synonyms for Mucky:

adj.

all (adjective)
muddy.
cloudy (adjective)
murky.
dirty (adjective)
grubby, dusty, contaminated, unsanitary, untidy, defiled, slovenly, icky, grimy, slimy, sloppy, crummy, squalid, unhygienic, foul, smutty, messy, grungy, filthy.
filthy (adjective)
offensive, obscene, soiled, unclean, impure, putrid.
foul (adjective)
fetid.
grimy (adjective)
sordid.
grubby (adjective)
shabby, scruffy.
humid (adjective)
wet.
marshy (adjective)
quaggy, boggy.
mucky (adjective)
oozy, sludgy, slushy, miry, muddy.
muddy (adjective)
dingy, dirty, marshy, swampy.
unclean (adjective)
crummy, shabby, sloppy, offensive, dusty, grimy, unhygenic, scatological, festering, obscene, squalid, infectious, smutty, dingy, impure, murky, insalubrious, putrid, slovenly, filthy, unclean, dirty, muddy, septic, untidy, grubby, disgusting, grungy, foul, sordid, fetid, toxic, unsanitary, odious, defiled, scruffy, icky.

n.

slimy, sludgy, slushy, clean, oozy. mucky (noun)
muddy, boggy, sloughy, dirty, marshy, quaggy, swampy, miry, soiled, unclean, wet.

v.

dirty (verb)
contaminated, unhygienic, messy.

Other synonyms:

sludgy, slushy. oozy. oozy
slimy.
Other relevant words:
wet, sloughy, boggy, clean, quaggy, sludgy, swampy, marshy, messy, slimy, unhygienic, contaminated, soiled, miry, oozy, slushy.