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All answers having "Publicity" as clue:

3 Character Answers:

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INK



4 Character Answers:

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FAME

HYPE



5 Character Answers:

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ECLAT

PRESS

STUNT



7 Character Answers:

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FANFARE

RECLAME



9 Character Answers:

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LIMELIGHT

SPOTLIGHT



11 Character Answers:

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ADVERTISING