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All answers having "Worried" as clue:

3 Character Answers:

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ATE



4 Character Answers:

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EDGY



5 Character Answers:

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AFRET

ATEAT

CARED



6 Character Answers:

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SCARED

STEWED

UNEASY



7 Character Answers:

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ALARMED

ANXIOUS

BROODED

FRAUGHT

FRETFUL

FRETTED

INASTEW

SWEATED



8 Character Answers:

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HARASSED

INASWEAT



9 Character Answers:

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CONCERNED