Open English Wordnet
Verbs
(v)erupt, ignite, catch fire, take fire, combust, conflagratestart to burn or burst into flames“Marsh gases ignited suddenly”, “The oily rags combusted spontaneously”
(v)erupt, belch, extravasatebecome active and spew forth lava and rocks“Vesuvius erupts once in a while”
(v)erupt, recrudesce, break outbecome raw or open“He broke out in hives”, “My skin breaks out when I eat strawberries”, “Such boils tend to recrudesce”