Source : Webster's Revised Unabridged Dictionary (1913)

Copious \Co"pi*ous\, a. [L. copiosus, fr. copia abundance: cf.
   F. copieux. See {Copy}, {Opulent}.]
   Large in quantity or amount; plentiful; abundant; fruitful.

         Kindly pours its copious treasures forth. --Thomson.

         Hail, Son of God, Savior of men! thy name Shall be the
         copious matter of my song.               --Milton.

   Syn: Ample; abundant; plentiful; plenteous; rich; full;
        exuberant; overflowing; full. See {Ample}.

Source : WordNet®

copious
     adj 1: large in number or quantity (especially of discourse); "she
            took copious notes"; "extensive press coverage"; "a
            subject of voluminous legislation" [syn: {extensive},
            {voluminous}]
     2: affording an abundant supply; "had ample food for the
        party"; "copious provisions"; "food is plentiful"; "a
        plenteous grape harvest"; "a rich supply" [syn: {ample}, {plenteous},
         {plentiful}, {rich}]