みじんこうきくさでわありません
微塵子浮草ではありません
mijinkōkikusadewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of みじんこうきくさ

1. Not a speck of dust or floating weed.; Not insignificant.; Not worthless.

Negative
Polite
Formal Register
Usually Written in Kana