むやみじゃありません
無闇じゃありません
muyamijārimasen

Noun
Desu Copula
na-Adjective
Negation Auxiliary

The polite negative form of むやみ

1. It is not reckless.; It is not unreasonable.; It is not groundless.

Negative
Polite
Terminal Form
Usually Written in Kana