/ Dictionary / Index I irruptive: Meaning and Definition of Find definitions for: ir•rup•tive Pronunciation: (i-rup'tiv), [key] — adj. of, pertaining to, or characterized by irruption. irrupting or tending to irrupt. intrusive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: irruptive (Thesaurus) irruption IRS Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language