# theirn

> English word · Pronoun

## Definitions
1. Theirs.

## Etymology
From Middle English theiren, compare hern. Displaced in standard speech by the -s form, theirs, which see for more.

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