むやみじゃありませんでした
無闇じゃありませんでした
muyamijārimasendeshita

Noun
Desu Copula
na-Adjective

The polite, past negative form of むやみ

1. It wasn't reckless.; It wasn't groundless.; It wasn't unreasonable.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana