Denied an introduction, men must suppress sighs for Felicity (9)
I believe the answer is:
happiness
'for felicity' is the definition.
(synonyms)
'denied an introduction men must suppress sighs' is the wordplay.
I cannot quite understand how this works, but
'an' could be 'i' (Roman numeral for one) and 'i' is located in the answer.
'men' could be 'pp' (P is short for pawn - man can mean a chess piece) and 'pp' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for happiness that I've seen before include "Great contentment" , "Cheer" , "State of well-being, contentment" , "Contentment, joy" , "Felicity" .)