Definition: angry and upset because of something bad that has happened that you cannot forget Level: B2
尽管经历了许多困苦，她并没有变得愤世嫉俗。
Despite all her hardships, she didn't become ___bitter.
在遭遇背叛后，他心怀怨愤多年。
He remained ___bitter for years after the betrayal.
