IPA: /ɪˈrɛɡjʊlər/
KK: /ɪˈrɛɡjələr/
Not following a regular pattern or rule; different from what is usual or expected.
The irregular shape of the rock made it difficult to stack.
Comparative: more irregular
Superlative: most irregular
A person or thing that does not follow the usual rules or patterns, often used to describe soldiers not part of a regular army or items that do not meet standard quality.
The irregular fought bravely alongside the regular troops.
Irregular → It is formed from "ir-" (meaning not) and "regularis" (from Latin, meaning rule or order). The word describes something that does not conform to a standard rule or order.
Think of 'not' ('ir-') following a 'rule' ('regularis') — that's why irregular means something that doesn't follow the usual rules.