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