Etymology Explorer › English

Where does “irregular” come from?

Irregular comes from Old French irreguler, from Latin irregularis, composed of the prefix in- (not) and regularis (ruled, orderly), ultimately from the Proto-Indo-European root h₃reǵ- meaning to direct or rule.

irregular (English): nonstandard; not conforming to rules or...

Definitions

  1. nonstandard; not conforming to rules or...

Ancestry of “irregular”, step by step

StepLanguageWordMeaning
1Old Frenchirreguler—
2Latinirrēgulāris—
3Latinrēgulāris—
4Latinrēgula—
5Latin-ularegō + API → rēgula; tegō + API → tēgula;...
6Proto-Indo-European-tlomAlternative form of *-trom
7Proto-Indo-European-tromForms nouns denoting a tool or instrument
8Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

Words derived from “irregular”

  • irregularly
  • irregularization
  • irregularize
  • irregularness
  • nonirregular
  • irregularist
Every word from Proto-Indo-European -tḗr →