Name adopted by racially abused subordinate (9)
I believe the answer is:
ancillary
'subordinate' is the definition.
(I've seen this in another clue)
'name adopted by racially abused' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'adopted by' indicates putting letters inside (I've seen this in other clues).
'abused' is an anagram indicator.
'racially' anagrammed gives 'acillary'.
'n' inserted into 'acillary' is 'ANCILLARY'.
(Other definitions for ancillary that I've seen before include "Additional" , "Providing necessary support" , "Accessory, auxiliary" , "Supporting, subsidiary" .)