begin, start - have a beginning, in a temporal, spatial, or evaluative sense; "The DMZ begins right over the hill"; "The second movement begins after the Allegro"; "Prices for these homes start at $250,000"

deepen, intensify - become more intense; "The debate intensified"; "His dislike for raw fish only deepened in Japan"

change state, turn - undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election"

blow out - erupt in an uncontrolled manner; "The oil well blew out"

catch - start burning; "The fire caught"

light up - start to burn with a bright flame; "The coal in the BBQ grill finally lit up"

combust, burn - cause to burn or combust; "The sun burned off the fog"; "We combust coal and other fossil fuels"

dehisce - burst or split open; "flowers dehisce when they release pollen"

appear - come into sight or view; "He suddenly appeared at the wedding"; "A new star appeared on the horizon"

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

explode, burst - burst outward, usually with noise; "The champagne bottle exploded"

express emotion, express feelings - give verbal or other expression to one's feelings

appear - come into sight or view; "He suddenly appeared at the wedding"; "A new star appeared on the horizon"

push through, break through, erupt, come out - as of teeth, for example; "The tooth erupted and had to be extracted"

pain, ail, afflict, trouble - cause bodily suffering to