start abruptly; After 1989, peace broke out in the former East Bloc

[ Syn: break out ]

erupt or intensify suddenly; Unrest erupted in the country; Tempers flared at the meeting; The crowd irrupted into a burst of patriotism

[ Syn: irrupt , flare up , flare , break open , burst out ]

start to burn or burst into flames; Marsh gases ignited suddenly; The oily rags combusted spontaneously

[ Syn: ignite , catch fire , take fire , combust , conflagrate ]

break out; The tooth erupted and had to be extracted

[ Syn: come out , break through , push through ]

become active and spew forth lava and rocks; Vesuvius erupts once in a while

[ Syn: belch , extravasate ]

force out or release suddenly and often violently something pent up; break into tears; erupt in anger

[ Syn: break , burst ]

appear on the skin; A rash erupted on her arms after she had touched the exotic plant'

become raw or open; He broke out in hives; My skin breaks out when I eat strawberries; Such boils tend to recrudesce

[ Syn: recrudesce , break out ]