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All answers having "Discernment" as clue:

3 Character Answers:

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EAR

EYE



4 Character Answers:

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TACT



5 Character Answers:

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SENSE

TASTE



6 Character Answers:

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ACUMEN

SEEING



7 Character Answers:

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INSIGHT



8 Character Answers:

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SAGENESS



12 Character Answers:

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PERSPICACITY