/ Dictionary / Index E enthusiastic: Meaning and Definition of Find definitions for: en•thu•si•as•tic Pronunciation: (en-th"zē-as'tik), [key] — adj. full of or characterized by enthusiasm; ardent: He seems very enthusiastic about his role in the play. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: enthusiastic (Thesaurus) enthusiast enthymeme Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language