erupt

(verb) start abruptly. Synonyms: break out. Examples: "After 1989, peace broke out in the former east bloc."

(verb) erupt or intensify suddenly. Synonyms: irrupt, flare up, flare, break open, burst out. Examples: "Unrest erupted in the country." "Tempers flared at the meeting." "The crowd irrupted into a burst of patriotism."

(verb) start to burn or burst into flames. Synonyms: ignite, catch fire, take fire, combust, conflagrate. Examples: "Marsh gases ignited suddenly." "The oily rags combusted spontaneously."

(verb) break out. Synonyms: come out, break through, push through. Examples: "The tooth erupted and had to be extracted."

(verb) become active and spew forth lava and rocks. Synonyms: belch, extravasate. Examples: "Vesuvius erupts once in a while."

(verb) force out or release suddenly and often violently something pent up. Synonyms: break, burst. Examples: "Break into tears." "Erupt in anger."

(verb) appear on the skin. Examples: "A rash erupted on her arms after she had touched the exotic plant."

(verb) become raw or open. Synonyms: recrudesce, break out. Examples: "He broke out in hives." "My skin breaks out when i eat strawberries." "Such boils tend to recrudesce."