# kryptonite

> English word · Noun · IPA /ˈkɹɪptənaɪt/ · frequency rank #33,303

## Definitions
1. The one weakness of something or someone that is otherwise invulnerable.
2. Crack cocaine.

## Etymology
From a fictional radioactive element, kryptonite, that has a detrimental effect on the otherwise invulnerable character Superman. Apparently formed as krypton (“a chemical element, Kr”) + -ite.

## Common misspellings (16)
`kkryptonite`, `krpytonite`, `krryptonite`, `krypotnite`, `krypptonite`, `kryptnoite`, `kryptointe`, `kryptoniet`, `kryptonitte`, `kryptonnite`, `kryptontie`, `krypttonite`, `krytponite`, `kryyptonite`, `kyrptonite`, `rkyptonite`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/kryptonite