縮退 しゅくたい故障 こしょうじゃなかったです
shukutaiko shōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 縮退故障

1. Wasn't a deterioration/failure.; Wasn't regressing/degrading.

Past/Perfective
Negative
Polite
Casual Register
Computing