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All answers having "Shred" as clue:

3 Character Answers:

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BIT

RAG

RIP



4 Character Answers:

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ATOM

IOTA

REND

SNIP

TEAR

WHIT

WISP



5 Character Answers:

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CUTUP

FIBER

GRATE

RIPUP



6 Character Answers:

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TATTER

TEARUP



8 Character Answers:

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RIPAPART



9 Character Answers:

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TEARAPART