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All answers having "Contrite" as clue:

5 Character Answers:

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RUING

SORRY



6 Character Answers:

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RUEFUL



7 Character Answers:

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ASHAMED



8 Character Answers:

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PENITENT

SHEEPISH



9 Character Answers:

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CHASTENED

REGRETFUL

REPENTANT



10 Character Answers:

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APOLOGETIC

REMORSEFUL