勃ぼつ然ぜん

adverb taking the 'to' particle, taru-adjective

suddenly; all at once

Literary adverb describing an abrupt, forceful occurrence. Often used with verbs of change or emotion.

• 彼かれは勃ぼつ然ぜんとして怒おこり出だした。

  He suddenly flared up in anger.

adverb taking the 'to' particle, taru-adjective

flaring up (in anger); in a flare

Specifically for a sudden outburst of anger or strong emotion. Often used in the phrase 勃然として怒る.

• その言こと葉ばに彼かれは勃ぼつ然ぜんとして立たち上あがった。