resentful

adjective

feeling or expressing bitterness or indignation at having been treated unfairly.

Pronunciation: /ɹɪˈzɛntfəl/

Etymology: From resent + -ful.

Inclined to resent, who tends to harbor resentment, when wronged.
Harboring resentment, full of resentment, at a given moment.
“‘Them bloody chaps 'ave a cushy job,’ said little Martlow with resentful envy. ‘Just fly over the line, take a peek at ol' Fritz, and as soon as a bit o' shrapnel comes their way, fuck off 'ome jildy, toot sweet.’”
“Is it serving Hashem to be machmir and resentful, rather than adhere to the letter of the law and be relaxed and happy?”