noun
cutting through difficulties with decisive skill
A yojijukugo describing swift, sharp resolution of a tangled problem, like cutting through a knotted rope with a fine blade. Often used in the phrase 快刀乱麻を断つ.
彼の決断はまさに快刀乱麻だった。
His decision truly cut through the confusion like a sharp knife.
複雑
He solved the complex problem as if cutting through a tangled mess with a sharp blade.