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All answers having "Swollen" as clue:

4 Character Answers:

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BREW

OPAL



5 Character Answers:

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GOUTY

PUFFY

TUMID



6 Character Answers:

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TURGID



7 Character Answers:

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BLOATED

BULBOUS



8 Character Answers:

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ENGORGED

ENLARGED

VARICOSE



9 Character Answers:

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DISTENDED