- Alternative spelling of
1825, Samuel Johnson, Dr. Johnson's Works: Life, Poems, and Tales, Volume 1:
- Their pleasures, poor as they were, could not be preserved pure, but were imbittered by petty competitions, and worthless emulation.
1873, David Livingstone, Missionary Travels and Researches in South Africa:
- But my joy on reaching the east coast was sadly imbittered by the news that Commander MacLune […] had, with Lieutenant Woodruffe and five men, been lost on the bar.
1889, Theodore Roosevelt, The Winning of the West, Volume Four:
- Naturally the Tennesseeans, conscious that they had not wronged the Indians, and had scrupulously observed the treaty, grew imbittered over, the wanton Indian outrages.