Feel bitter about being dispatched again? (6)
I believe the answer is:
resent
I believe this is a double definition.
'feel bitter' is the first definition.
(I've seen this before)
'being dispatched again?' is the second definition.
(I've seen this before)
'about' acts as a link.
(Other definitions for resent that I've seen before include "being put in post again" , "Feel or show annoyance" , "Dispatched again - take amiss" , "Feel bitter or indignant about" , "Be offended by" .)