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All answers having "Sticking point?" as clue:

3 Character Answers:

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RIB

RUT



4 Character Answers:

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BARB

CRAW

MIRE

SNAG

TINE



5 Character Answers:

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BRIAR

CARET

PRONG



6 Character Answers:

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DAGGER



8 Character Answers:

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QUAGMIRE



10 Character Answers:

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VOODOODOLL