むやみじゃなかったです
無闇じゃなかったです
muyamijanakattadesu

Noun
Desu Copula
na-Adjective

The polite, past negative form of むやみ

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

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana