Adjective quadruple has 2 senses
  1. quadruple, quadruplicate, quadruplex, fourfold - having four units or components; "quadruple rhythm has four beats per measure"; "quadruplex wire"
    Antonym: single (indirect, via multiple)
  2. quadruple, fourfold - four times as great or many; "a fourfold increase in the dosage"
    Antonym: single (indirect, via multiple)
,Noun quadruple has 1 sense
  1. quadruple - a quantity that is four times as great as another
    --1 is a kind of
    multiple
    Derived forms: verb quadruplicate1, verb quadruple1
,Verb quadruple has 1 sense
  1. quadruple - increase fourfold; "His stock earning quadrupled"
    --1 is one way to
    multiply, manifold
    Derived forms: noun quadruplicate1, noun quadrupling1, noun quadruple1
    Sample sentences:
    They quadruple their earnings this year
    Their earnings quadruple this year
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