noun
old style; old current
Refers to an older way of doing things, a traditional method, or a former trend. Often used in contrast with 新流 (new style).
彼の書道は旧流の技法を守っている。
His calligraphy preserves the techniques of the old style.
旧流の考え方にこだわる必要はない。
There's no need to cling to old-fashioned ways of thinking.