Upper-class racist actor, nasty about India (12)
I believe the answer is:
aristocratic
'upper-class' is the definition.
(synonyms)
'racist actor nasty about india' is the wordplay.
'nasty' indicates an anagram (a nasty or wrong spelling).
'about' means one lot of letters goes inside another.
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'racist'+'actor'='racistactor'
'racistactor' with letters rearranged gives 'aristocratc'.
'aristocratc' enclosing 'i' is 'ARISTOCRATIC'.
(Other definitions for aristocratic that I've seen before include "Of noble birth" , "classy" , "Patrician" , "Of the nobility" , "Upper-class" .)