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All answers having "Dumps" as clue:

4 Character Answers:

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AXES

HUTS



5 Character Answers:

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JILTS

SELLS

SHEDS

STIES



7 Character Answers:

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ASHCANS

PIGPENS

UNLOADS



8 Character Answers:

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EYESORES

PIGSTIES

SELLSOFF



9 Character Answers:

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DEEPSIXES



10 Character Answers:

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SCRAPHEAPS