out of fashion

US /aʊt əv ˈfæʃən/
UK /aʊt əv ˈfæʃən/
"out of fashion" picture
1.

過時, 不流行

no longer popular or in style

:
Those bell-bottom jeans are completely out of fashion now.
那些喇叭褲現在完全過時了
His ideas are a bit out of fashion for modern business practices.
他的想法對於現代商業實踐來說有點過時了