na-adjective, noun
daring; brave; bold; valiant; intrepid; dauntless
Describes a person or action that is fiercely courageous and unafraid of danger. Often used in literary or formal contexts to praise heroic bravery.
彼は勇猛な戦士として知られている。
He is known as a brave warrior.
勇猛果敢に敵陣へ突入した。
They charged into the enemy camp with daring courage.
Compound of 勇 (courage) and 猛 (fierce). The exact historical derivation is uncertain, but the kanji combination directly conveys the meaning of fierce bravery.