A race isn't terribly bigoted (9)
I believe the answer is:
sectarian
'bigoted' is the definition.
('sectarian' can be similar in meaning to 'bigoted')
'a race isn't terribly' is the wordplay.
'terribly' indicates an anagram.
'a'+'race'+'isnt'='araceisnt'
'araceisnt' anagrammed gives 'SECTARIAN'.
(Other definitions for sectarian that I've seen before include "from an unorthodox group" , "Concerning one group" , "Denominational" , "Of a religious faction" , "Prejudiced against other religions? So ascertain" .)