ししふんじん
furious (energy, battle, etc.); frenzied (work, activity, etc.); ferocious
No-adjective, Noun
今回こんかいの成果せいかはひとえに彼かれの獅子奮迅ししふんじんの働はたらきの賜物たまものでしょう。
Our latest results are the fruit of his furious efforts.