/ Dictionary / Index P plentiful: Meaning and Definition of Find definitions for: plen•ti•ful Pronunciation: (plen'ti-ful), [key] — adj. existing in great plenty: Coal was plentiful, and therefore cheap, in that region. yielding abundantly: a plentiful source of inspiration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plentiful (Thesaurus) plenteous plenty Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language