Irregular, irregulars or irregularity may refer to any of the following:

Astronomy Irregular galaxy Irregular moon Irregular variable, a kind of star

Language Irregular inflection, the formation of derived forms such as plurals in unpredictable ways Irregular verb

Law Against regulations In canon law, an irregularity is an impediment for the Catholic priesthood or for exercising orders already received

Mathematics

Irregularity of a surface Irregularity of distributions Irregularity index

Medicine

Irregular bone Arrhythmia, also known as an irregular heartbeat Constipation, also called "irregularity"

Other

The Irregulars, a 2021 Netflix series Accounting irregularity Irregular military Irregular chess opening

See also

Anomaly (disambiguation) Baker Street Irregulars Regular (disambiguation)