Crossword Genius

Refinement expected of men at smart weddings? (8)

Ross

I believe the answer is:

niceties

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'refinement' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

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(Other definitions for niceties that I've seen before include "Degrees of precision" , "Shades" , "delicacies" , "refinement" , "Delicacy" .)

I've seen this clue in The Times.
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