Rhyme of 43-Across, but not a homophone of 49-Across (3)

I believe the answer is:

rue

(Other definitions for rue that I've seen before include "Feel bad" , "Regret, be sorry for" , "Feel regret for the herb" , "way Parisians go about" , "Regret the bitter herb" .)

I've seen this clue in The New York Times.

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