なおざりでわありません
等閑ではありません
naozaridewārimasen

Noun
Desu Copula
na-Adjective
Negation Auxiliary

The polite negative form of なおざり

1. Is not negligible.; Is not insignificant.; Is not to be disregarded.

Negative
Polite
Formal Register
Usually Written in Kana