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

Crossword clues for Making a mess of things:

GUMUPTHEWORKS: Make a mess of things
SCREWINGUP: Making a mess of things
SCREWUP: Make a mess of things
ERR: Make a mess of things
ERRS: Makes a mess of things
DROPPINGTHEBALL: Making a mess of things