rankling discontent, esp. from envy or jealousy; grudge
Word origin
[1505–15; heart + burning]This word is first recorded in the period 1505–15. Other words that entered Englishat around the same time include: alternate, joggle, jump, producer, terrace
Examples of 'heartburning' in a sentence
heartburning
The melody itself seems to have caused some heartburning to many excellent critics.
George Ainslie Hight Wagner's "Tristan und Isolde" : an essay on the Wagnerian drama (1912). Retrieved in 2019 from Project Gutenberg (https://www.gutenberg.org/ebooks/)