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

Crossword clues for Bubbling, maybe 7 letters:

ATABOIL: Bubbling, maybe
PROTECT: Wrap in bubble wrap, maybe
BOILS: Starts to bubble, maybe
BOILS: Starts bubbling, maybe
OTHER: Final bubble on a questionnaire, maybe