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All answers having "Figure of speech" as clue:

4 Character Answers:

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DELI



5 Character Answers:

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IDIOM

IMAGE

IRONY

SUNNI

TROPE



6 Character Answers:

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LECTOR

ORATOR

PHRASE

SIMILE

ZEUGMA



7 Character Answers:

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PHONEME



8 Character Answers:

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METAPHOR

OXYMORON



9 Character Answers:

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NOTORIOUS



10 Character Answers:

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EXPRESSION



15 Character Answers:

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SOAPBOXPREACHER