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All answers having "Wipes out" as clue:

3 Character Answers:

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RHO



4 Character Answers:

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EFFS

OFFS



6 Character Answers:

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CLEANS

CLEARS

EATSIT

ERASES



7 Character Answers:

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EFFACES



8 Character Answers:

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DESTROYS

EXPUNGES



9 Character Answers:

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GETSRIDOF



10 Character Answers:

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ERADICATES