verb (used without object)
to break or burst in suddenly.
to manifest violent activity or emotion, as a group of persons.
(of animals) to increase suddenly in numbers through a lessening of the number of deaths.
Origin of irrupt
1850–55; < Latin irruptus; see irruption
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for irruptdrain, inundate, brim, deluge, spill, leak, drown, pour, swamp, cascade, gush, submerge, soak, overrun, engulf, eject, spit, belch, erupt, vomit
to enter forcibly or suddenly
(of a plant or animal population) to enter a region suddenly and in very large numbers
(of a population) to increase suddenly and greatly
Word Origin for irrupt
C19: from Latin irrumpere to rush into, invade, from rumpere to break, burst
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
"to break into," 1855, back-formation from irruption or else from Latin irruptus, past participle of irrumpere (see irruption).
Online Etymology Dictionary, © 2010 Douglas Harper