Much Conservative regret about buffoon (7)
I believe the answer is:
farceur
'buffoon' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see a link between them that I can't see?
'much conservative regret about' is the wordplay.
'much' becomes 'far' (I've seen this in other clues).
'conservative' becomes 'C' (UK political abbreviation).
'regret' becomes 'rue' (to rue something is to regret it).
'about' says the letters should be written in reverse.
'rue' reversed gives 'eur'.
'far'+'c'+'eur'='FARCEUR'
Can you help me to learn more?
(Other definitions for farceur that I've seen before include "playmaker" , "Comedian" , "Person who writes comedies -- fur care (anag)" .)