S: (v) erupt, irrupt, flare up, flare, break open, burst out (erupt or intensify suddenly) "Unrest erupted in the country"; "Tempers flared at the meeting"; "The crowd irrupted into a burst of patriotism"
S: (v) explode, irrupt (increase rapidly and in an uncontrolled manner) "The population of India is exploding"; "The island's rodent population irrupted"