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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.


vb (intr)
1. to enter forcibly or suddenly
2. (Biology) (of a plant or animal population) to enter a region suddenly and in very large numbers
3. (of a population) to increase suddenly and greatly
[C19: from Latin irrumpere to rush into, invade, from rumpere to break, burst]
irˈruption n



1. to break or burst in suddenly.
2. to manifest violent activity or emotion, as a group of persons.
3. (of animals) to increase suddenly in numbers through a lessening of the number of deaths.
[1850–55; < Latin irrumpere to burst (into), force an entrance =ir- ir-1 + rumpere to burst]
ir•rup′tion, n.
ir•rup′tive, adj.
ir•rup′tive•ly, adv.


Past participle: irrupted
Gerund: irrupting

I irrupt
you irrupt
he/she/it irrupts
we irrupt
you irrupt
they irrupt
I irrupted
you irrupted
he/she/it irrupted
we irrupted
you irrupted
they irrupted
Present Continuous
I am irrupting
you are irrupting
he/she/it is irrupting
we are irrupting
you are irrupting
they are irrupting
Present Perfect
I have irrupted
you have irrupted
he/she/it has irrupted
we have irrupted
you have irrupted
they have irrupted
Past Continuous
I was irrupting
you were irrupting
he/she/it was irrupting
we were irrupting
you were irrupting
they were irrupting
Past Perfect
I had irrupted
you had irrupted
he/she/it had irrupted
we had irrupted
you had irrupted
they had irrupted
I will irrupt
you will irrupt
he/she/it will irrupt
we will irrupt
you will irrupt
they will irrupt
Future Perfect
I will have irrupted
you will have irrupted
he/she/it will have irrupted
we will have irrupted
you will have irrupted
they will have irrupted
Future Continuous
I will be irrupting
you will be irrupting
he/she/it will be irrupting
we will be irrupting
you will be irrupting
they will be irrupting
Present Perfect Continuous
I have been irrupting
you have been irrupting
he/she/it has been irrupting
we have been irrupting
you have been irrupting
they have been irrupting
Future Perfect Continuous
I will have been irrupting
you will have been irrupting
he/she/it will have been irrupting
we will have been irrupting
you will have been irrupting
they will have been irrupting
Past Perfect Continuous
I had been irrupting
you had been irrupting
he/she/it had been irrupting
we had been irrupting
you had been irrupting
they had been irrupting
I would irrupt
you would irrupt
he/she/it would irrupt
we would irrupt
you would irrupt
they would irrupt
Past Conditional
I would have irrupted
you would have irrupted
he/she/it would have irrupted
we would have irrupted
you would have irrupted
they would have irrupted
ThesaurusAntonymsRelated WordsSynonymsLegend:
Verb1.irrupt - enter uninvited; "They intruded on our dinner party"; "She irrupted into our sitting room"
break in - intrude on uninvited; "The nosy couple broke in on our conversation"
come in, enter, get in, go in, go into, move into, get into - to come or go into; "the boat entered an area of shallow marshes"
bother - intrude or enter uninvited; "Don't bother the professor while she is grading term papers"
barge in, gate-crash, crash - enter uninvited; informal; "let's crash the party!"
move in on - make intrusive advances towards
2.irrupt - erupt or intensify suddenly; "Unrest erupted in the country"; "Tempers flared at the meeting"; "The crowd irrupted into a burst of patriotism"
deepen, intensify - become more intense; "The debate intensified"; "His dislike for raw fish only deepened in Japan"
3.irrupt - increase rapidly and in an uncontrolled manner; "The population of India is exploding"; "The island's rodent population irrupted"
increase - become bigger or greater in amount; "The amount of work increased"


vieindringen, hereinstürzen; (water also)hereinbrechen
References in periodicals archive ?
En outre, elle deplore [beaucoup moins que] vivement [beaucoup plus grand que] les [beaucoup moins que] irruptions persistantes d'extremistes de la droite israelienne sur le site [beaucoup plus grand que] et [beaucoup moins que] exhorte [beaucoup plus grand que] IsraE1/2l a [beaucoup moins que] prendre les mesures necessaires pour empecher les agissements provocateurs qui violent (son) caractere sacre [beaucoup plus grand que].
Because of warming temperatures and consequent irruptions of moose ticks, the New Hampshire moose population, which once numbered 7,500, plummeted 40 percent.
Descriptions of Coolquitt's works are destined to sound almost impossibly pedestrian, somehow wrong--a dish of decapitated cigarette-lighter heads, for example, in kandy; a fuzzy pink blanket sandwiched inside a Plexiglas cube in i've gotta take this; a pair of mismatched handles set on a whited-out plastic box frame in icebox (all 2014)--but his designs are on precisely such prosaic, inarticulate irruptions in the world of matter, his technique conceived to highlight something essential in his raw materials even as he re-presents them within his comprehensively warping regime of recontextualization.
Because we cannot standardize for catch effort, we, and other authors, have discussed irruptions in terms of the proportion of HY birds rather than abundance (Beckett and Proudfoot 2011).
A chapter on the phenomenon of snowy owl irruptions (excursions outside the birds' usual range) starts off strong, but peters out with the almost rhetorical "Do snowy owls have a wanderlust gene?
A binary understanding of the difference between rationality and irrationality, knowledge and superstition, Enlightenment and myth, can only generate constant reversal around a single turning point," Sng contends, which "produces a narrative that ignores error's ability to unset-tie even the very logic on which such dialectical reversals depend" (4)To the extent that error is already by definition divided from itself, it cannot be simply opposed to directed movement; rather, in its (dis)articulation as errance, it manifests itself in multiple and heterogeneous ways as non-directed, uncontainable, and uncontrollable reflux, convulsions, or irruptions.
Les premieres irruptions (sortie des dents) sont accompagnees de fievres, d'inflammations .
Human life is not trapped in the immanent frame bur open to irruptions of "higher times," as he calls them, that interrupt mundane history and are always moved by loves that exceed the domain of codes, and lived in relation to some "unconditional" reality--say, God, since God, by definition, is not conditioned by the world.
2], quite evenly spread) were observed on the gravel-covered ground between the buildings of the biological station soon after the irruptions.
And while we have provided needed insight into the fate and transport of the dispersant we still don't know just how serious the threat is; the deep ocean is a sensitive ecosystem unaccustomed to chemical irruptions like this, and there is a lot we don't understand about this cold, dark world.
That in turn is followed by the irruptions from Asia into Europe of the Avars, Lombards, Bulgars and so on, invasions that eventually swept away the entire Roman Empire; although, as Richardson rightly points out, that "is not to say that they swept away classical civilization" (p.