Crossword Genius

Frenchified setting? (6)

Ross

I believe the answer is:

milieu

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'setting?' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

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(Other definitions for milieu that I've seen before include "Surroundings - location" , "Environmental condition, surrounding" , "'Surroundings, setting (6)'" , "Environment - setting" , "(Social) setting" .)

I've seen this clue in the Evening Standard.
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