/ Dictionary / Index E energizer: Meaning and Definition of Find definitions for: en•er•giz•er Pronunciation: (en'ur-jī"zur), [key] — n. a person or thing that energizes. antidepressant (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: energizer (Thesaurus) energize energy Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language