我对我的童年和所受到的对待感到非常愤懑。

I feel very ___bitter about my childhood and the way I was treated.

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.