resentfully
adverb
UK/rɪˈzent.fᵊl.i/
US/rɪˈzent.fᵊl.i/
Definitions of resentfully adverb
in a manner that expresses anger and displeasure due to being forced to accept something undesirable
She agreed resentfully, her eyes filled with anger.
He watched them leave resentfully, his heart full of discontent.
“I deserve better,” she grumbled resentfully.