out of fashion

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

过时, 不流行

no longer popular or in style

:
Those bell-bottom jeans are completely out of fashion now.
那些喇叭裤现在完全过时了
His ideas are a bit out of fashion for modern business practices.
他的想法对于现代商业实践来说有点过时了