蛮勇 (ばんゆう) Japanese meaning | Kotomoraない
。
His actions are nothing more than foolhardiness.
Usage patterns
蛮勇を振るうto display reckless courage
He showed reckless courage by charging alone into the enemy camp.
蛮勇に駆られるto be driven by reckless courage
Driven by reckless courage, he started climbing the dangerous cliff.
蛮勇をふるって〈動詞〉to do something with reckless courage
With reckless courage, he argued back against his boss.