Usage examples for copious:

• On sitting down to rest, I was overcome with languor and sleep, and, but for the copious supply of fresh water everywhere, travelling would have been intolerable. "Himalayan Journals V2." – J. D. Hooker

• It would seem that the arch, as thus defined, and as used by the Romans, was not known to the Greeks in the early periods of their history, otherwise a language so copious as theirs, and of such ready application, would not have wanted a name properly Greek by which to distinguish it. "Incidents of Travel in Yucatan, Vol. I." – John L. Stephens

• The library of M. Le Prevost is however as copious as that of Mons. "A Bibliographical, Antiquarian and Picturesque Tour in France and Germany, Volume One" – Thomas Frognall Dibdin

• Deep and rapid as it was, its course had been but short; a copious spring burst from the ground not half a mile above, whence streams issuing different ways helped to form the slimy waste which girt in this little island of firm land. "The Rival Heirs being the Third and Last Chronicle of Aescendune" – A. D. Crake