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All answers having "Set straight" as clue:

4 Character Answers:

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TRUE



5 Character Answers:

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ALIGN

ALINE

AMEND

DRESS

TRUED



6 Character Answers:

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ALINED

ORIENT

REFORM



7 Character Answers:

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DRESSED

TRUEDUP



8 Character Answers:

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NEATENED

ORGANIZE

ORIENTED



9 Character Answers:

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ORIENTATE