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