Origin of copious
Examples from the Web for copiousness
To have two or more words with exactly the same sense, is no proof of copiousness, but simply an inconvenience.
When we examine the vocabulary of Shakespeare, what first strikes us is its copiousness.
The many written Aztec sermons, catechisms, and rituals also attest the copiousness of the tongue.The Works of Hubert Howe Bancroft, Volume 3|Hubert Howe Bancroft
Dr. Johnson said, he had great variety of knowledge, store of imagery, copiousness of language.Life Of Johnson, Volume 5|Boswell
The method of looking at any subject-matter in a diversity of lights naturally leads to copiousness of quotation.The Philosophy of Natural Theology|William Jackson
British Dictionary definitions for copiousness
Word Origin for copious
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.