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All answers having "Doomed" as clue:

4 Character Answers:

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DONE

SUNK

WERE



5 Character Answers:

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FATED



6 Character Answers:

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DAMNED



7 Character Answers:

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DONEFOR

UNSAVED



8 Character Answers:

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ACCURSED

ILLFATED



9 Character Answers:

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ILLOMENED