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intr.v. ir·rupt·ed, ir·rupt·ing, ir·rupts
1. To break or burst in: The boys irrupted into the kitchen.
2. Ecology To increase rapidly in number, especially beyond the normal range: snowy owls that irrupted southward.

[Latin irrumpere, irrupt- : in-, in; see in-2 + rumpere, to break; see reup- in Indo-European roots.]

ir·rup′tion n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.irruption - a sudden violent entrance; a bursting in; "the recent irruption of bad manners"
incoming, ingress, entering, entrance, entry - the act of entering; "she made a grand entrance"
2.irruption - a sudden sharp increase in the relative numbers of a population
population growth - increase in the number of people who inhabit a territory or state
3.irruption - a sudden violent spontaneous occurrence (usually of some undesirable condition)irruption - a sudden violent spontaneous occurrence (usually of some undesirable condition); "the outbreak of hostilities"
happening, natural event, occurrence, occurrent - an event that happens
epidemic - a widespread outbreak of an infectious disease; many people are infected at the same time
recrudescence - a return of something after a period of abatement; "a recrudescence of racism"; "a recrudescence of the symptoms"


[ɪˈrʌpʃən] Nirrupción f


nEindringen nt, → Hereinstürzen nt; (of water also)Hereinbrechen nt
References in classic literature ?
This theory assumes that the Great Lakes were the deep pools of one immense body of fresh water, which lay too low to be drained by the irruption that laid bare the land.
I was even accustomed to make an irruption into some houses, where I was well entertained, and after learning the kernels and very last sieveful of news -- what had subsided, the prospects of war and peace, and whether the world was likely to hold together much longer -- I was let out through the rear avenues, and so escaped to the woods again.
Before she could say, "Come out, Charlie, and let my skeleton alone," a sudden irruption of boys, all in a high state of tickle, proclaimed to the hidden rogue that his joke was a failure.
latest irruption -- only two cents -- all about the big miracle in the Valley of Holiness
Had an army of invaders made an irruption into their territory they could not have evinced greater excitement.
A fault in the scenery, a face in the audience, an irruption of the audience on to the stage, and all our carefully planned gestures mean nothing, or mean too much.
Beyond a general rise in land values, Oakland had not acknowledged his irruption on the financial scene.
Sparsit and her prize; and the whole body made a disorderly irruption into Mr.
Made giddy by the turbulent irruption of this multitude of staring faces into her cell of years, by the confusing sensation of being in the air, and the yet more confusing sensation of being afoot, by the unexpected changes in half-remembered objects, and the want of likeness between the controllable pictures her imagination had often drawn of the life from which she was secluded and the overwhelming rush of the reality, she held her way as if she were environed by distracting thoughts, rather than by external humanity and observation.
His experience told him that intervention was too dubious a responsibility to be lightly incurred; the possible issue either of an endeavor to restore the former relations with Lucy and Philip, or of counselling submission to this irruption of a new feeling, was hidden in a darkness all the more impenetrable because each immediate step was clogged with evil.
Their three heads had been close together during this brief discourse, and it had been as much as they could do to hear one another, even then: so tremendous was the noise of the living ocean, in its irruption into the Fortress, and its inundation of the courts and passages and staircases.
And now, when this respectability had lasted undisturbed for nearly thirty years-- when all that preceded it had long lain benumbed in the consciousness-- that past had risen and immersed his thought as if with the terrible irruption of a new sense overburthening the feeble being.