みじんこうきくさじゃありませんでした
微塵子浮草じゃありませんでした
mijinkōkikusajārimasendeshita

Noun
Desu Copula

The polite, past negative form of みじんこうきくさ

1. Was not dust motes/floating weeds.; Was not insignificant.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana