Crossword Genius

Risky transaction with a Greek character (4)

Ross

I believe the answer is:

beta

'greek character' is the definition.
(letter from the Greek alphabet)

'risky transaction with a' is the wordplay.
'risky transaction' becomes 'bet' (I've seen this in another clue).
'with' is a charade indicator (letters next to each other).
'bet'+'a'='BETA'

(Other definitions for beta that I've seen before include "Second letter of the Greek alphabet" , "less than perfect mark" , "second class grade?" , "Second Greek letter, B" , "Greek character - not quite top-notch" .)

I've seen this clue in The Irish News.
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