Embitter/ɪmˈbɪtər/ Definition 1 of 2Pro Tip 1/3Duration Matters Embitter implies a feeling that develops over time, not suddenly. Years of unfair treatment embittered the workers. Pro Tip 2/3Deep Resentment The anger from 'embitter' is deep and long-lasting, not just annoyance. She was embittered by the constant criticism and doubted herself. Pro Tip 3/3Personal Experience Embitter often relates to personal experiences rather than general situations. The cheating scandal embittered fans who had trusted the athlete.