Definition, Meaning & Synonyms
kryptonite
Noun
/ˈkrɪp.tə.naɪt/

Definition
A fictional substance from the Superman comics that weakens Superman when he is exposed to it.

Examples
- For him, the constant pressure of public speaking is his kryptonite.
- Chocolate is her kryptonite; she can’t resist it no matter what.

Meaning
In popular culture, kryptonite refers to any weakness or vulnerability, particularly in someone or something that is otherwise strong or invulnerable.

Synonyms
- Weakness
- Downfall
- Vulnerability