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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Covered in gunk 6 letters:

SLIMES: Covers with gunk
SLIMED: Covered in gunk
SLIMY: Gunk-covered
MUCKY: Covered with gunk
TARS: Covers with black gunk
MUCKY: Covered with slimy gunk