A Persian fairy some found superior (4)
I believe the answer is:
peri
'a persian fairy' is the definition.
(I've seen this before)
'some found superior' is the wordplay.
'some found' indicates a hidden word.
'PERI' is hidden within 'superior'.
(Other definitions for peri that I've seen before include "Beautiful fairy" , "Fairy of Persian folklore" , "Persian fairy or genie" , "Fairy queen" , "Supernatural being in Persian folklore" .)