Meaning : Start abruptly.
After 1989, peace broke out in the former East Bloc.
Synonyms : break out
Meaning : Erupt or intensify suddenly.
Unrest erupted in the country.
Tempers flared at the meeting.
The crowd irrupted into a burst of patriotism.
Meaning : Start to burn or burst into flames.
Marsh gases ignited suddenly.
The oily rags combusted spontaneously.