also: しせい
noun, na-adjective, noun which may take the genitive case particle 'no'
Literary word evoking a powerful, flame-like energy or flourishing state. Rare in everyday speech; mostly found in formal writing or classical contexts.
その詩には青春の熾盛な情熱が溢れている。
That poem overflows with the vigorous passion of youth.
熾盛を極める勢いで事業を拡大した。
They expanded the business with an intensity that reached its peak.