Quiet about men losing head or feeling bitter? (9)
I believe the answer is:
resentful
'feeling bitter?' is the definition.
'quiet about men losing head' is the wordplay.
'quiet' becomes 'restful' ('restful' can be similar in meaning to 'quiet'**).
'about' is an insertion indicator.
'losing head' means to remove the first letter.
'men' with its initial letter taken off is 'en'.
'restful' going around 'en' is 'RESENTFUL'.
'or' acts as a link.
(Other definitions for resentful that I've seen before include "Aggrieved" , "feeling sore" , "Tiny wave" , "Feeling bitterness" , "Embittered - nurse left (anag)" .)