腐敗 ふはい分子 ぶんしじゃなかったです
fuhaibunshijanakattadesu

Noun
Desu Copula

The polite, past negative form of 腐敗分子

1. Wasn't a corrupt element.; Wasn't a bad influence.; Wasn't a rotten apple.

Past/Perfective
Negative
Polite
Casual Register