noun
rousing oneself fiercely; being intensely stirred up
Formal or literary term. Often used in the compound 獅子奮迅 (shishi funjin), meaning 'with the fierce energy of a lion'. As a standalone noun, it describes a state of intense, vigorous action or arousal.
See also: 獅子奮迅
彼は獅子奮迅の活躍でチームを勝利に導いた。
He led the team to victory with the fierce energy of a lion.
奮迅の勢いで仕事に取り組む。
Tackle work with rousing vigor.