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

Crossword clues for Naughty one:

SCAMP: Naughty one
IMP: Naughty one
MECHANTS: Naughty ones from Nice
RASCAL: Naughty one
OPERETTA: Naughty Marietta is one
COAL: Lump for one on the "naughty list"