/ Dictionary / Index I intrusive r: Meaning and Definition of Find definitions for: intrusive r Pronunciation: [key] — Phonet. Phonet. See(def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: intrusiver (Thesaurus) intrusive intrust Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language