ə̇ˈrəpt verb
( -ed/-ing/-s )
Etymology: Latin irruptus, past participle of irrumpere, literally, to break in, from in- (I) in + rumpere to break — more at rupture
intransitive verb
1.
a. : to enter forceably or suddenly : appear without warning : intrude
the sea had once irrupted into the cavern
the merchants constituted a very tight caste, rarely irrupting into social groups either above or below — G.W.Johnson
b. of an animal population : to undergo a sudden upsurge in numbers especially when natural ecological balances and checks are disturbed
2. : erupt 1c
the crowd irrupted in a fervor of patriotism — Time
transitive verb
: intrude 3 — opposed to erupt