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All answers having "Polishes" as clue:

4 Character Answers:

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RUBS



5 Character Answers:

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BUFFS

EDITS

SANDS

WAXES



6 Character Answers:

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CLEANS

EMENDS

SHEENS

SHINES

SLEEKS



7 Character Answers:

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BUFFSUP

GLOSSES

SMOOTHS



8 Character Answers:

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SMOOTHES



10 Character Answers:

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SPITSHINES