Sound name adopted by social inferior (4)
I believe the answer is:
oink
'sound' is the definition.
(I know that oink is a type of noise)
'name adopted by social inferior' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'adopted by' is an insertion indicator (I've seen this in other clues).
'social inferior' becomes 'oik' (I am not sure about this - if you are sure you should believe this answer much more).
'n' put inside 'oik' is 'OINK'.
Can you help me to learn more?
(Other definitions for oink that I've seen before include "Beastly noise" , "Grunt by a pig" , "Sow's sound" , "Noise made by a pig" , "Sound from a sty" .)