quadruple

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a set of four similar things considered as a unit
  2. noun a quantity that is four times as great as another
  3. verb increase fourfold

Etymology

From Middle English quadruple, from Latin quadruplus. Can be analyzed as quadri- + -ple.

In classic literature

Synonyms

quartet, quartette, quadruplet

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