Synonyms of sludge in English:

sludge


See US English definition of sludge

See UK English definition of sludge

See Spanish definition of lodo

noun

1‘the channel had become silted up with layer upon layer of sludge’

SYNONYMS
mud, muck, mire, ooze, silt, alluvium, dirt, slime, slush, slurry
sediment, lees, dregs, deposit, grounds, settlings, precipitate, residue
British dialect clag
Scottish, Northern English clart
Irish slob
informal gunk, crud, gloop, grunge, gook, goo
British informal gunge, grot
North American informal guck, glop
rare grouts