Be resentful of (8)
I believe the answer is:
begrudge
'be resentful of' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for begrudge that I've seen before include "Unwillingly allow" , "Envy, resent other's good fortune" , "Reluctantly give up" , "Envy, resent having to give" , "Resent other's good fortune or possession" .)