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All answers having "Beats" as clue:

3 Character Answers:

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RHO



4 Character Answers:

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PSON

TOPS



5 Character Answers:

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CANES

DRUMS

EDGES

FLOGS

LICKS

MATES

TEMPI

TICKS

WHIPS



6 Character Answers:

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FLAILS

PULSES

TEMPOS

THROBS



7 Character Answers:

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DEFEATS

OUTDOES

RHYTHMS

UNSEATS



8 Character Answers:

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CADENCES

EDGESOUT

PULSATES

TROUNCES