Zero in tennis (4)

I believe the answer is:

love

'zero in tennis' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for love that I've seen before include "Feel great affection for" , "0 (tennis)" , "See 10" , "No points" , "1970 film, starring Ali MacGraw and Ryan O'Neal" .)

I've seen this clue in The New York Times, the USA Today, the Penny Press, the Universal and the King Feature Syndicate.

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