Having an old-fashioned or antiquated style or atmosphere; traditional or archaic in appearance or manner.
祖母は古風な着物をよく着る。
My grandmother often wears old-fashioned kimonos.
その小説は古風な言い回しが多く、読解には少し慣れが必要だ。
That novel contains many archaic expressions, so you need some familiarity to understand it.
古風な家具を集めて部屋をコーディネートした。
I decorated the room with old-fashioned furniture.