/ Dictionary / Index E effusive: Meaning and Definition of Find definitions for: ef•fu•sive Pronunciation: (i-fy'siv), [key] — adj. unduly demonstrative; lacking reserve: effusive greetings; an effusive person. pouring out; overflowing. extrusive (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: effusive (Thesaurus) effusion Effy Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language