Verb
1. enter uninvited;
"They intruded on our dinner party""She irrupted into our sitting room"2. erupt or intensify suddenly;
"Unrest erupted in the country""Tempers flared at the meeting""The crowd irrupted into a burst of patriotism"3. increase rapidly and in an uncontrolled manner;
"The population of India is exploding""The island's rodent population irrupted"