# first vs firth

> English confusable word pair

## The two words

### first
*adjective · IPA /fɜːst/ · frequency rank #81*
Preceding all others of a series or kind; the ordinal of one; earliest.

### firth
*noun · IPA /fɜːθ/ · frequency rank #22,972*
An arm or inlet of the sea; a river estuary.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/first-vs-firth