Superior abstainer quits this? (4)
I believe the answer is:
beer
'superior abstainer quits this?' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for beer that I've seen before include "Drink brewed with malt" , "Fermented alcoholic drink" , "Fermented malt and hops" , "Hopped drink" , "Drink using hops, malt, etc" .)