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All answers having "Fastening" as clue:

3 Character Answers:

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FIT



4 Character Answers:

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HASP

KNOT

PEEL



5 Character Answers:

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CLASP

LATCH

STRAP

TYING



6 Character Answers:

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AMULET

LACING



7 Character Answers:

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GRIPPER

LASHING

PINNING



8 Character Answers:

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CHAINING

ETCETERA

FUNNYMAN

REEFKNOT



11 Character Answers:

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BAKEDALASKA

DIRTYTRICKS