irregular

Reading level: hard

Estimated CEFR level: B2 — Upper-Intermediate

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a member of an irregular armed force that fights a stronger force by sabotage and harassment
  2. noun merchandise that has imperfections; usually sold at a reduced price without the brand name
  3. adjective contrary to rule or accepted order or general practice

Etymology

From Middle English irreguler, from Old French irreguler, from Medieval Latin or Late Latin irrēgulāris, from in- + regularis, equivalent to ir- + regular.

In classic literature

Synonyms

guerrilla, guerilla, insurgent

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