# sudden vs sullen

> English confusable word pair

## The two words

### sudden
*adjective · IPA /ˈsʌdn̩/ · frequency rank #3,659*
Occurring quickly with little or no warning or expectation; instantly.

### sullen
*adjective · IPA /ˈsʌlən/ · frequency rank #41,399*
Having a brooding ill temper; sulky.

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