1. (

• erupt ,
• break_out ,

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

2. (

• 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" ;

3. (

• erupt ,
• ignite ,
• catch_fire ,
• take_fire ,
• combust ,
• conflagrate

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

4. (

• erupt ,
• come_out ,
• break_through ,
• push_through

) break out; "The tooth erupted and had to be extracted" ;

5. (

• erupt ,
• belch ,
• extravasate

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

6. (

• break ,
• burst ,
• erupt

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

7. (

• erupt ,

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

8. (

• erupt ,
• recrudesce ,
• break_out

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