なおざりじゃありません
等閑じゃありません
naozarijārimasen

Noun
Desu Copula
na-Adjective
Negation Auxiliary

The polite negative form of なおざり

1. It is not insignificant.; It is not to be taken lightly.; It's important.

Negative
Polite
Terminal Form
Usually Written in Kana