Terrible dill Bette disparaged (9)
I believe the answer is:
belittled
'disparaged' is the definition.
('belittle' can be a synonym of 'disparage')
'terrible dill bette' is the wordplay.
'terrible' is an anagram indicator.
'dill'+'bette'='dillbette'
'dillbette' with letters rearranged gives 'BELITTLED'.
(Other definitions for belittled that I've seen before include "Disparaged" , "Made to feel small" , "Implied that person is of no importance" .)