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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.
1. scanty, scarce. 3. meager.
Synonym Study
2. See ample. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for copiousness
Historical Examples
  • They sing with more confidence and copiousness, and as if they, too, had been touched by civilization.

    Fresh Fields

    John Burroughs
  • For copiousness, sustained wit, and verbal brilliancy the man had few equals.

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

    Villa Elsa Stuart Henry
  • He had a light to all its copiousness, and the other party should have allowed him full enjoyment.

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

  • In popular poems, common ideas are unfolded with copiousness, and set off in polished verse—and this is called poetry.

  • 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
  • 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
  • The method of looking at any subject-matter in a diversity of lights naturally leads to copiousness of quotation.

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
Copyright © 2003-2014, LLC
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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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