Meaning of IRREGULAR in English


I. i-ˈre-gyə-lər, ˌi(r)- adjective

Etymology: Middle English irreguler, from Anglo-French, from Late Latin irregularis not in accordance with rule, from Latin in- + regularis regular

Date: 14th century


a. : not being or acting in accord with laws, rules, or established custom

irregular conduct

b. : not conforming to the usual pattern of inflection

irregular verbs

specifically : strong 16

c. : not following a usual or prescribed procedure ; especially British : celebrated without either proclamation of the banns or publication of intention to marry

irregular marriage

2. : not belonging to or a part of a regular organized group ; specifically : not belonging to a regular army but raised for a special purpose

irregular troops


a. : lacking perfect symmetry or evenness

an irregular coastline

b. : having one or more floral parts of the same whorl different in size, shape, or arrangement ; specifically : zygomorphic

4. : lacking continuity or regularity especially of occurrence or activity

irregular employment

• ir·reg·u·lar·ly adverb


irregular , anomalous , unnatural mean not conforming to rule, law, or custom. irregular implies not conforming to a law or regulation imposed for the sake of uniformity in method, practice, or conduct

concerned about his irregular behavior

anomalous implies not conforming to what might be expected because of the class or type to which it belongs or the laws that govern its existence

her drive made her an anomalous figure in a sleepy organization

unnatural suggests what is contrary to nature or to principles or standards felt to be essential to the well-being of civilized society

prisoners treated with unnatural cruelty

II. noun

Date: 15th century

: one that is irregular: as

a. : a soldier who is not a member of a regular military force

b. plural : merchandise that has minor defects or that falls next below the manufacturer's standard for firsts

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.