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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 ?
latest irruption -- only two cents -- all about the big miracle in the Valley of Holiness
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.
The day after her arrival at Prebaudet, she was innocently employed, about eight o'clock in the morning, in listening, as she breakfasted, to the various reports of her keeper and her gardener, when Jacquelin made a violent irruption into the dining-room.
Rann was inwardly maintaining the dignity of the Church in the face of this scandalous irruption of Methodism, and as that dignity was bound up with his own sonorous utterance of the responses, his argument naturally suggested a quotation from the psalm he had read the last Sunday afternoon.
Had an army of invaders made an irruption into their territory they could not have evinced greater excitement.
Newman's sudden irruption had evidently discomposed both mother and son.
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.
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.
Beyond a general rise in land values, Oakland had not acknowledged his irruption on the financial scene.
And we were getting our share when there occurred a new irruption on the scene.
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.
Mrs Wititterly, keenly alive to the glory of having a lord and a baronet among her visiting acquaintance, lost no time in signing to Mr Wititterly to open the door, and thus it was that in less than thirty seconds Mrs Nickleby's party had made an irruption into Mrs Wititterly's box, which it filled to the very door, there being in fact only room for Messrs Pyke and Pluck to get in their heads and waistcoats.