Crossword Genius

Even couple in orgy aroused … (5)

Ross

I believe the answer is:

randy

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'aroused' is the definition.
(I know that aroused can be written as randy)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for randy that I've seen before include "Hot" , "boisterous locally" , "Lustful" , "Eager to get into bed" .)

I've seen this clue in The Guardian.
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