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adjective co·pi·ous \ˈkō-pē-əs\

Simple Definition of copious

  • : very large in amount or number

Source: Merriam-Webster's Learner's Dictionary

Full Definition of copious

  1. 1 a :  yielding something abundantly <a copious harvest> <copious springs> b :  plentiful in number <copious references to other writers>

  2. 2 a :  full of thought, information, or matter b :  profuse or exuberant in words, expression, or style <a copious talker>

  3. 3 :  present in large quantity :  taking place on a large scale <copious weeping> <copious food and drink>

copiously adverb
copiousness noun

Examples of copious in a sentence

  1. It was no surprise that spin was more copious than ever during the election campaign. —Michael Kinsley, Time, 25 Dec. 2000–1 Jan. 2001

  2. These pockets of melted rock are rich in silica and release copious amounts of volatile gases that are held under high pressures. —Sandra Blakeslee, New York Times, 7 Apr. 1998

  3. … travelers grew accustomed to having copious helpings of meat when they visited Quimper's inn. —James A. Michener, Texas, 1985

  4. The Constants—ignorant, vulgar, and brash—had copious quantities of dumb luck. —Kurt Vonnegut, Jr., The Sirens Of Titan, 1959

  5. The storm produced a copious amount of rain.

  6. She sat in the front row and took copious notes during the lecture.

Did You Know?

Copious derives from Latin copia ("abundance"), which in turn combines the prefix co- and ops ("wealth" or "power"). "Copious" and "opulent" (also from "ops"), along with "ample," "plentiful," and "abundant," all mean "more than sufficient." "Ample" implies a generous sufficiency to satisfy a particular requirement ("ample proof"). "Copious" puts emphasis upon largeness of supply more than on fullness or richness ("copious toasts to the bride and groom"). "Plentiful" implies a rich, and usually more than sufficient, supply ("a plentiful supply of textbooks"). "Abundant" suggests a greater or richer supply than "plentiful" does ("moved by the abundant offers to help"). But use "opulent" when the supply is both abundant and infused with a richness that allows an extra measure of gratification ("the opulent blossoms of the cherry trees").

Origin of copious

Middle English, from Latin copiosus, from copia abundance, from co- + ops wealth — more at opulent

First Known Use: 14th century

Synonym Discussion of copious

plentiful, ample, abundant, copious mean more than sufficient without being excessive. plentiful implies a great or rich supply <peaches are plentiful this summer>. ample implies a generous sufficiency to satisfy a particular requirement <ample food to last the winter>. abundant suggests an even greater or richer supply than does plentiful <streams abundant with fish>. copious stresses largeness of supply rather than fullness or richness <copious examples of bureaucratic waste>.

COPIOUS Defined for Kids


adjective co·pi·ous \ˈkō-pē-əs\

Definition of copious for Students

  1. :  very plentiful :  abundant <She takes copious notes in class.>

copiously adverb

Seen and Heard

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expressing little or no emotion

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