embitter

1. (archaic) To cause (something) to be or taste bitter; to bitter.Synonyms: acerbatearchaictransitive

2. (figurative)Examples: "He imbitters not a diſtaſtfull meſſage to a forrein Prince by his indiſcretion in delivering it."; "[I]t is our fond conceits, our froward humors, our perverse behaviors, which do create the trouble, which seemeth adherent to any condition, and embittereth every state; which from any slight occasion doth create vexation, and turneth every event into disaster."; "The Proſpect of Death is ſo gloomy and diſmal, that if it vvere conſtantly before our Eyes, it vvould imbitter all the Svveets of Life."figurativelytransitive

3. (figurative)Examples: "Sometimes it [pride] ſtirreth vp men, and imboldeneth them to offer vvrongs: ſometimes imbittereth men; and maketh them vvayvvard againſt the right: […]"; "And hovv farre the like cenſurings and deſpiſings have embittered the ſpirits, and vvhetted both the tongues and pens of learned men one againſt another in our ovvne Church; […]"; "But tvvo things occaſioned great Contentions in them; The one vvas, the VVealth and Dignity of ſome Sees; the other vvas, the Heats that had been raiſed by the Arrian Hereſy, by vvhich Peoples minds vvere embittered one againſt another."figurativelytransitive