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All answers having "Fuzzy" as clue:

4 Character Answers:

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HAZY



5 Character Answers:

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LINTY

NAPPY

VAGUE

WOOLY



6 Character Answers:

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ADDLED

FLUFFY



7 Character Answers:

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BLURRED

NEBULAR

UNCLEAR



8 Character Answers:

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NOTCLEAR



10 Character Answers:

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INDEFINITE