irrupt

Enter with force

To irrupt is to enter forcibly or suddenly—to burst in.

Wildlife populations irrupt when they explode in number and spread into new territory: Snowy owls irrupted southward that winter.

The word is the opposite of erupt: eruption goes outward, irruption comes inward.

Protesters irrupted into the chamber.

intrusion

invade

Enter by force

encroach · trespass · infiltrate · penetrate · storm in · break in · crash · inundate · overrun · swarm

population

surge

Sudden powerful increase

swarm · outbreak · boom · spike · overrun · infestation · plague · breed · colonize · spread

sudden

explosive

Prone to sudden detonation

unanticipated · precipitous · flash · instantaneous · startling · surprising · shocking · violent · impetuous · meteoric

forceful

violent

Involving physical force

vehement · vigorous · aggressive · overwhelming · turbulent · tempestuous · chaotic · uncontrollable · wild · ferocious

Opposites
manner of entry

irruptease in

Enter or begin gradually

slip in · percolate · seep · ooze · edge in

movement direction

irrupterupt

Burst out suddenly

burst out · exit · withdraw · retreat · depart

population dynamics

irruptemigrate

Leave for another country

disperse · scatter · crash · collapse · die off

Family

irruption

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