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All answers having "Weighed down" as clue:

4 Character Answers:

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KNEE



5 Character Answers:

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HINDI

LADED

LADEN

TAXED

TRUCE



6 Character Answers:

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LOADED

MINNOW



7 Character Answers:

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ASUNDER

LADENED



8 Character Answers:

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BURDENED

LEADENED



10 Character Answers:

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ENCUMBERED