Verb

(en verb)

* {{quote-book, year=1825, author=Samuel Johnson, title=Dr. Johnson's Works: Life, Poems, and Tales, Volume 1, chapter=, edition= citation

, passage=Their pleasures, poor as they were, could not be preserved pure, but were imbittered by petty competitions, and worthless emulation. }}

* {{quote-book, year=1873, author=David Livingstone, title=Missionary Travels and Researches in South Africa, chapter=, edition= citation

, passage=But my joy on reaching the east coast was sadly imbittered by the news that Commander MacLune

* {{quote-book, year=1889, author=Theodore Roosevelt, title=The Winning of the West, Volume Four, chapter=, edition= citation

, passage=Naturally the Tennesseeans, conscious that they had not wronged the Indians, and had scrupulously observed the treaty, grew imbittered over, the wanton Indian outrages. }}