Bigoted relation curiously not without heart (10)
I believe the answer is:
intolerant
'bigoted' is the definition.
(similar in meaning)
'relation curiously not without heart' is the wordplay.
'curiously' indicates an anagram.
'without heart' means to remove the middle letters.
'not' with its middle taken out is 'nt'.
'relation' anagrammed gives 'intolera'.
'intolera'+'nt'='INTOLERANT'
(Other definitions for intolerant that I've seen before include "Impatient" , "Lacking respect for the beliefs of others" , "Hating" , "illiberal" , "Bigoted" .)