adverb taking the 'to' particle, taru-adjective
Literary adverb describing an abrupt, forceful occurrence. Often used with verbs of change or emotion.
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.
He suddenly flared up in anger.
At those words, he sprang to his feet in a sudden rage.
Sino-Japanese compound from 勃 (sudden, vigorous) and 然 (adverbial suffix). The exact historical derivation is uncertain, but the word has been used in literary Japanese to describe abrupt, forceful actions or emotions.