Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “irregular”

irregular

adjective (RULE)   /ɪˈreɡ·jə·lər/
(of behavior or actions) not according to usual rules or what is expected grammar An irregular verb, noun, adjective, or other type of word does not obey the usual rules in the language for changing word endings.
(Definition of irregular adjective (RULE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of irregular

More American English definitions for “irregular”

Definitions of “irregular” in other dictionaries

Word of the Day

limber up

to do gentle exercises to stretch the muscles in order to prepare the body for more active physical exercise

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More