irruption
nounA bursting in; a breaking or rushing into a place; a sudden invasion or incursion.
nounSynonyms Foray, raid.
nounA bursting in; a sudden, violent rushing into a place.
nounA sudden and violent inroad, or entrance of invaders.
nounThe action of
An
a sudden violent spontaneous occurrence (usually of some undesirable condition)
nouna sudden sharp increase in the relative numbers of a population
nouna sudden violent entrance; a bursting in