/ Dictionary / Index P peppy: Meaning and Definition of Find definitions for: pep•py Pronunciation: (pep'ē), [key] — -pi•er, -pi•est. energetic; vigorous; lively. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: peppy (Thesaurus) pep pill pep rally Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language