さい先端 せんたんじゃなかったです
saisentanjanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 最先端

1. Wasn't cutting-edge.; Wasn't state-of-the-art.; Wasn't the latest.

Past/Perfective
Negative
Polite
Casual Register