noun
out of touch with the times; behind the times
Describes a person, idea, or thing that is not keeping up with current trends or modern ways.
彼の考え方は時代離れしている。
His way of thinking is out of touch with the times.
その店の品揃えは時代離れだ。
The store's selection is behind the times.
Compound of 時代 (jidai, 'era') and 離れ (banare, 'separation, detachment'), literally 'era-separation'.