“怀恨”常见的英文表达是 “bear a grudge” 或 “hold a grudge”，这两个短语都表示心中长期存有怨恨、不满。
bear a grudge：强调内心持续怀有怨恨情绪。
例句：He still bears a grudge against his former boss for firing him.（他仍然对解雇他的前老板怀恨在心。 ）
hold a grudge：同样表达心里一直记着怨恨，不轻易释怀。
例句：She's been holding a grudge against me ever since I didn't invite her to the party.（自从我没邀请她参加聚会后，她就一直对我怀恨在心。 ）
此外， “nurse a resentment” 也有类似意思，指长期在心里滋生、维持怨恨情绪 。例如：He's been nursing a resentment against his family for not supporting his career choice.（他一直对家人不支持他的职业选择而心怀怨恨。 ）