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All answers having "Notions" as clue:

3 Character Answers:

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HAY



4 Character Answers:

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FAME

GENE



5 Character Answers:

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IDEAS

IDEES

RINSE



7 Character Answers:

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UMBRAGE



8 Character Answers:

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CONCEPTS

INKLINGS



10 Character Answers:

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IMAGININGS



11 Character Answers:

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CATCHPHRASE