Wormwood and gall adjective phrase
"Gall" is bile, a substance secreted by the liver and proverbial for its bitterness, while "wormwood" is an aromatic plant with a bitter taste.
If something is "wormwood and gall", it is full of anguish, indignation, and desperation.
She has been falling in love with him for a long time, so his denial of her feelings are wormwood and gall to her.
It must have been wormwood and gall to Jessica to be grounded by her parents for two weeks.
He can't stand saying wormwood and gall words to his wife.
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".