同盟 どうめい怠業 たいぎょうじゃありませんでした
dō meita igyōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 同盟怠業

1. Was not negligent in alliance.; Was not remiss in duty to allies.

Past/Perfective
Negative
Polite
Terminal Form