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All answers having "Gush" as clue:

3 Character Answers:

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JET

RHO

RUN



4 Character Answers:

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EMIT

FLOW

POUR

RAVE

SPEW

SPIN



5 Character Answers:

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EMOTE

ERUPT

EXUDE

SPATE

SPIRT

SPOUT

SPURT



6 Character Answers:

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EFFUSE



7 Character Answers:

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CASCADE

ENTHUSE



9 Character Answers:

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WAXPOETIC