Nonirregular

Nonirregular is an adjective formed by adding the prefix non- to irregular. It is used to indicate the absence of irregularity or deviations from a pattern that is considered standard or expected. The term is not common in everyday language and is more likely to appear in technical or descriptive writing where precision about pattern or behavior is needed without asserting a stronger normative term like regular.

Because irregular and nonirregular describe opposing situations, nonirregular can sound awkward or redundant in many contexts. Writers often prefer simpler wording, such as regular or not irregular, depending on the audience and the specific domain. When nonirregular is used, it typically aims to stress a lack of irregularity rather than to claim a particularly strong sense of regularity.

In practical use, nonirregular may appear in discussions of data, processes, or structures that exhibit uniformity or predictability. For example, a sequence with evenly spaced elements might be described as nonirregular to contrast it with irregular, sporadic, or clustered sequences. In mathematics or physics, the term could be used informally to distinguish objects that do not display irregular features from those that do, though analysts would more often use terms like regular, smooth, or homogeneous.

Etymology reflects its construction from non- plus irregular, with irregular itself deriving from Latin irregularis. The term’s rarity means it is best understood as a logical negation rather than a standard label in most fields. See also irregular, regular, and related negations in terminology.