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

Crossword clues for Mischief: Colloq. 11 letters:

SHENANIGANS: Mischief: Colloq.
HOB: Mischief: Colloq.
UPTONOGOOD: Occupied with mischief: Colloq.