bitter
/ˈbɪt.ɚ/ adverb C2- To an intense or severe degree; bitterly.
From the library
Once again her method had succeeded; but her success was very bitter to her.
I should weep bitter tears if I did.”
Then there were wicked, bitter howls from the young wolves: “Akela!
All her affection for Geraldine turned to bitter hate and she vowed that she should never marry Bertram.
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