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All answers having "Remained" as clue:

3 Character Answers:

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SAT

WAS



4 Character Answers:

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LAIN



5 Character Answers:

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BIDED

IDYLL

OFTEN

STAID

STOOD



6 Character Answers:

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ABIDED

LASTED

STAYED

STRIFE



7 Character Answers:

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TARRIED



8 Character Answers:

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LINGERED