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All answers having "Sanctions" as clue:

3 Character Answers:

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OKS



5 Character Answers:

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ABETS

AMENS

FIATS

OKAYS



6 Character Answers:

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ALLOWS



7 Character Answers:

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ASSENTS

BLESSES



8 Character Answers:

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ABETTALS

APPROVES

ENDORSES

RATIFIES



10 Character Answers:

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AUTHORIZES