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

Crossword clues for Fails at dieting:

REGAIN: Fail at dieting
GAIN: Fail at dieting
GAINS: Fails at dieting
GAIN: Fail with a diet
GAINED: Failed at a diet
GAIN: Fail on one's diet
GAIN: Fail miserably on one's diet