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.

1350–1400; Middle English < Latin cōpiōsus plentiful, rich, equivalent to cōpi(a) wealth (co- co- + op(s) Ops + -ia -ia) + -ōsus -ous

copiously, adverb
copiousness, copiosity [koh-pee-os-i-tee] , noun
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. 2014.
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World English Dictionary
copious (ˈkəʊpɪəs)
1.  abundant; extensive in quantity
2.  having or providing an abundant supply
3.  full of words, ideas, etc; profuse
[C14: from Latin cōpiōsus well supplied, from cōpia abundance, from ops wealth]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

late 14c., from L. copiosus "plentiful," from copia "abundance, profusion, plenty," from com- "with" + ops (gen. opis) "power, wealth, resources," from PIE base *op- "to work, produce in abundance" (see opus). Related: Copiously.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The statistics can be misleading: in places where rain falls copiously and
  evenly from the skies, withdrawals will be small.
Since axions can be produced from light, the sun and other stars should
  generate them copiously.
Now smelling-bottles, wine and everything that could support and stimulate were
  copiously produced.
The machines doing the grunt work loosen the dust and send it airborne where
  workers can breathe it in copiously.
Related Words
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