irrupt
v 1: enter uninvited; "They intruded on our dinner party"; "She
irrupted into our sitting room" [syn: intrude]
2: erupt or intensify suddenly; "Unrest erupted in the
country"; "Tempers flared at the meeting"; "The crowd
irrupted into a burst of patriotism" [syn: erupt, flare
up, flare, break open, burst out]
3: increase rapidly and in an uncontrolled manner; "The
population of India is exploding"; "The island's rodent
population irrupted" [syn: explode]