いとまきぼらじゃありませんでした
糸巻法螺じゃありませんでした
itomaki borajārimasendeshita

Noun
Desu Copula

The polite, past negative form of いとまきぼら

1. It wasn't a silk-reeling conch.; It wasn't a frivolous matter.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana