Turn feels wrong and bitter (9)
I believe the answer is:
resentful
'bitter' is the definition.
(synonyms)
'turn feels wrong' is the wordplay.
'wrong' indicates anagramming the letters.
'turn'+'feels'='turnfeels'
'turnfeels' is an anagram of 'RESENTFUL'.
'and' acts as a link.
(Other definitions for resentful that I've seen before include "Disgruntled" , "Feeling hostile because of injury" , "Tiny wave" , "Aggrieved" , "Feeling badly treated" .)