/ Dictionary / Index E enthusiasm: Meaning and Definition of Find definitions for: en•thu•si•asm Pronunciation: (en-th'zē-az"um), [key] — n. absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies. an occupation, activity, or pursuit in which such interest is shown: Hunting is his latest enthusiasm. any of various forms of extreme religious devotion, usually associated with intense emotionalism and a break with orthodoxy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: enthusiasm (Thesaurus) enthuse enthusiast Related Content Daily Word Quiz: feral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language