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gall and wormwood
Strong feelings of bitterness and resentment. ("Gall" is bile and "wormwood" is a bitter plant.) Ever since I lost the election for school president, I only feel gall and wormwood when I think of my unworthy opponent.
wormwood and galla source of bitter mortification and grief. literary
Gall is bile, a substance secreted by the liver and proverbial for its bitterness, while wormwood is an aromatic plant with a bitter taste. The expression originated in reference to various passages in the Bible, for example Lamentations 3:19: ‘Remembering mine affliction and my misery, the wormwood and the gall’.