1. to make someone feel angry, resentful, or hostile
Usage: third person singular present tense of ’embitter’
2. to make something taste bitter or unpleasant
Usage: literal sense; less common

Examples

• The unfair treatment embitters him toward his former employer.
• Years of disappointment embitters even the most optimistic person.
• The harsh criticism embitters her against the entire industry.
• Constant rejection embitters young artists trying to break into the field.
• The medicine embitters the taste of everything she eats.
• Nothing embitters a friendship like betrayal of trust.