## Meanings
1. Not happening at equal or expected times
2. Not even or smooth in shape or arrangement
3. Not following the usual rules of grammar
4. Against the usual rules or accepted way of doing things

## Examples
- He has irregular working hours that change every week.
- The coastline had an irregular, jagged edge.
- "Children" and "feet" are irregular plurals.
- The company was accused of irregular hiring practices.

## Synonyms
- abnormal
- rough
- salebrous
- singular
- strange
- unsteady

## Antonyms
- regular

## Derived Forms
- irregularist
- irregularity
- irregularization
- irregularize
- irregularly
- irregularness
- nonirregular
- regioirregular
- stereoirregular

## Roots and Affixes
- Root: irreguler
- Root: irrēgulāris
- Affix: ir- - not

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

## AI Etymology
Irregular comes from Middle English irreguler, from Old French irreguler, from Medieval Latin or Late Latin irrēgulāris, from in- + regularis, equivalent to ir- + regular. The analysis is mainly morphological: the modern adjectival form is built from the named base and affix.

## Topics
- Grammar & Function Words

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irregular

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