not even or regular in shape, size, arrangement, rhythm, or occurrence.
The old path had an irregular surface covered in bumps and potholes.
Her handwriting was irregular because she was nervous.
✦ From late Middle English, borrowed from Old French irreguler, from Medieval Latin irrēgulāris, equivalent to ir- ("not") + regular.
(especially of a verb) not following the usual pattern of inflection or conjugation.
English has many irregular verbs like 'go' and 'went'.
You need to memorize irregular past participles.
a soldier or fighter who is not a member of a regular army.
The irregular fought bravely against the invaders.
Irregulars often use hit-and-run tactics.
