Refinement expected of men at smart weddings? (8)
I believe the answer is:
niceties
'refinement' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for niceties that I've seen before include "Degrees of precision" , "Shades" , "delicacies" , "refinement" , "Delicacy" .)