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All answers having "Return" as clue:

4 Character Answers:

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PFIT



5 Character Answers:

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ENTER

HBACK

RECUR

REPAY

STILE

YIELD



6 Character Answers:

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CASHIN

GOBACK

ISHALL

PROFIT

REBATE

REMAND

REVERT



7 Character Answers:

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RESTORE



8 Character Answers:

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COMEHOME

HANDBACK

SENDBACK



9 Character Answers:

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BACKTRACK



10 Character Answers:

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CIRCLEBACK

HOMECOMING



15 Character Answers:

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COMEHOMETOROOST