# irregular

> English word · Adjective · IPA /ɪˈɹɛɡ.jʊ.lə/ · frequency rank #11,238

## Definitions
1. Nonstandard; not conforming to rules or expectations.
2. Rough (of a surface).
3. Without symmetry, regularity, or uniformity.
4. Not regular; having sides that are not equal or angles that are not equal.
5. Whose faces are not all regular polygons (or are not equally inclined to each other).
6. Not following the regular or expected patterns of inflection in a given language.

## Etymology
From Middle English irreguler, from Old French irreguler, from Medieval Latin or Late Latin irrēgulāris, from in- + regularis, equivalent to ir- + regular.

## Easily confused with
- **irregularly** (https://plainspell.com/en/vs/irregular-vs-irregularly)

## Common misspellings (11)
`iregular`, `irergular`, `irreggular`, `irregluar`, `irregualr`, `irregularr`, `irregullar`, `irregulra`, `irreuglar`, `irrgeular`, `riregular`

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