The Open Dictionary

kryptonite

noun

UK/ˈkrɪp.tᵊn.aɪt/
US/ˈkrɪp.tə.naɪt/

Definitions of kryptonite noun

  1. Uncountable(不可數名詞)

    A fictional substance, often appearing in stories and films, that has the ability to weaken the character Superman, who is otherwise invulnerable.

    （故事或電影中虛構的）一種化學元素，存在於超人故事中，會使超人喪失超能力。

  2. Uncountable(不可數名詞)

    Something that can severely weaken or damage a person or thing that is generally perceived as strong or invincible.

    （比喻）致命的弱點；剋星。

    • Outdated technology is kryptonite for companies that rely heavily on it.

      過時的技術是嚴重依賴它的公司的致命弱點。

    • Negative press is kryptonite for this politician.

      負面新聞是這位政治人物的剋星。

    • A lack of innovation is kryptonite to the company's growth.

      缺乏創新是公司成長的致命弱點。