One who prefers cream? (7)
I believe the answer is:
elitist
'one who prefers cream?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
This is all the clue.
Can you help me to learn more?
(Other definitions for elitist that I've seen before include "arrogant" , "for the cream" , "(One who is) discriminating in favour of select few" , "Favouring high society" , "one snobbishly prefers" .)