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[koh-pee-uh s] /ˈkoʊ pi əs/
large in quantity or number; abundant; plentiful:
copious amounts of food.
having or yielding an abundant supply:
a copious larder; a copious harvest.
exhibiting abundance or fullness, as of thoughts or words.
Origin of copious
1350-1400; Middle English < Latin cōpiōsus plentiful, rich, equivalent to cōpi(a) wealth (co- co- + op(s) Ops + -ia -ia) + -ōsus -ous
Related forms
copiously, adverb
copiousness, copiosity
[koh-pee-os-i-tee] /ˌkoʊ piˈɒs ɪ ti/ (Show IPA),
overcopious, adjective
overcopiously, adverb
overcopiousness, noun
uncopious, adjective
1. bountiful. 2. See ample.
1. scanty, scarce. 3. meager. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for copiousness
Historical Examples
  • And he was right, for there is no language in the world that can compare in copiousness of expression with the French.

    The Memoires of Casanova, Complete Jacques Casanova de Seingalt
  • They sing with more confidence and copiousness, and as if they, too, had been touched by civilization.

    Fresh Fields John Burroughs
  • From all this we may form some idea of the richness and copiousness of Joseph's history.

    Notes on the Book of Genesis Charles Henry Mackintosh
  • For copiousness, sustained wit, and verbal brilliancy the man had few equals.

    Unicorns James Huneker
  • And the drinking was, of course, of a copiousness he had little dreamed of.

    Villa Elsa Stuart Henry
  • He added to its richness, copiousness, and strength; he gave it music.

  • No relation between the copiousness of the eruption and the severity of the disease has ever been proved to exist.

  • There is a suggestion of the robin's love-song in his, but its copiousness, variety, and rapidity give it a character all its own.

    Bird Neighbors Neltje Blanchan
  • He had a light to all its copiousness, and the other party should have allowed him full enjoyment.

  • You would scarcely judge the sincerity of a mourner's sorrow by the copiousness of flow from his lachrymal glands?

    The Incendiary W. A. (William Augustine) Leahy
British Dictionary definitions for copiousness


abundant; extensive in quantity
having or providing an abundant supply
full of words, ideas, etc; profuse
Derived Forms
copiously, adverb
copiousness, noun
Word Origin
C14: from Latin cōpiōsus well supplied, from cōpia abundance, from ops wealth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for copiousness

full of information or matter

Word Origin

Latin copia 'plenty''s 21st Century Lexicon
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Word Origin and History for copiousness



mid-14c., from Latin copiosus "plentiful," from copia "an abundance, ample supply, profusion, plenty," from com- "with" (see com-) + ops (genitive opis) "power, wealth, resources," from PIE root *op- "to work, produce in abundance" (see opus). Related: Copiously.

Online Etymology Dictionary, © 2010 Douglas Harper
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