Crossword Genius

Expert (3)

Ross

'expert' is the definition.
(ace can informally mean very good)

This is the entire clue.

(Other definitions for ace that I've seen before include "Very good; playing card" , "reason for point of no return" , "One; A1" , "Top card or winning tennis serve" , "Crack" .)

I've seen this clue in the USA Today, The Sun, The Mirror, the LA Times, the King Feature Syndicate, the Evening Standard, the Penny Press, The Star Tribune, The Times, The New York Times, The Telegraph, the Universal and The Wall Street Journal.
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