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All answers having "Repulsive" as clue:

3 Character Answers:

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RHO



4 Character Answers:

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FOUL

ICKY

UGLY

VILE



5 Character Answers:

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ADDLE

GROSS

MEALS

NASTY

NERVE

SLIMY



6 Character Answers:

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HORRID

ODIOUS

UGSOME



7 Character Answers:

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HIDEOUS

NOISOME

OBSCENE



9 Character Answers:

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ABHORRENT

LOATHSOME