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Arrogant male turning us on (8)

Ross

I believe the answer is:

cocksure

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'arrogant' is the definition.
(I've seen this before)

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(Other definitions for cocksure that I've seen before include "Arrogantly certain" , "Use crock to be confidently certain" , "Showing arrogance" , "Arrogant" , "Arrogantly confident" .)

I've seen this clue in The Guardian.
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