綿 わた ぬけ朔日 さくじつじゃなかったです
wata nukeno sakujitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 綿抜の朔日

1. Wasn't soft/weak-willed.; Wasn't a blank slate/unformed.

Past/Perfective
Negative
Polite
Casual Register