Hesitate to get agitated about fine (9)
I believe the answer is:
aesthetic
'fine' is the definition.
(thesaurus)
'hesitate to get agitated about' is the wordplay.
'to get agitated' indicates an anagram.
'about' becomes 'c' (circa).
'hesitate' anagrammed gives 'aestheti'.
'aestheti'+'c'='AESTHETIC'
(Other definitions for aesthetic that I've seen before include "Concerned with the appreciation of beauty" , "Of pleasing appearance" .)