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All answers having "Sideways" as clue:

4 Character Answers:

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AWRY



5 Character Answers:

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ASKEW



6 Character Answers:

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ASKANT



7 Character Answers:

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ASKANCE

BYPATHS

LATERAL

LTERLLY



8 Character Answers:

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CRABWISE

EDGEWISE



9 Character Answers:

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LATERALLY