瞞着 まんちゃく手段 しゅだんじゃありませんでした
manchakushudanjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 瞞着手段

1. It wasn't a deceptive tactic.; It wasn't done by deception.

Past/Perfective
Negative
Polite
Terminal Form