しろくちじゃありませんでした
白口じゃありませんでした
shiroku chijārimasendeshita

Noun
Desu Copula

The polite, past negative form of しろぐち

1. Was not white mouth.; Was not saying so.; Was not telling the truth.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana