gunk

foul matter that mars the purity or cleanliness of something <I have to wash my hands; I got gunk all over them somehow> Synonyms crud, dirt, grime, filth, muck, smut, soilRelated Words scum, sewage, sewerage, slime, sludge, swill; dross, dust [British], garbage, junk, litter, refuse, rubbish, scrap, trash, waste; crock [dialect], soot; dinginess, dirtiness, dustiness, filthiness, foulness, griminess, grubbiness, nastiness, squalidness, uncleanliness, uncleannessNear Antonyms cleanliness, cleanness