Definition of resentful adjective from the Oxford Advanced Learner's Dictionary

 

resentful

 adjective
adjective
BrE BrE//rɪˈzentfl//
 
; NAmE NAmE//rɪˈzentfl//
 
Describing unpleasant traits, Anger
 
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feeling bitter or angry about something that you think is unfair a resentful look resentful of/at/about something They seemed to be resentful of our presence there. She was resentful at having been left out of the team. See related entries: Describing unpleasant traits, AngerExtra examples He felt deeply resentful towards/​toward his ex-wife. He was very resentful of their success. She felt resentful at the way she had been treated. She looked at him, almost resentful now. They grew bitter and resentful. They were bitterly resentful of the fact that they had to work such long hours.
See the Oxford Advanced American Dictionary entry: resentful