いなせじゃありませんでした
鯔背じゃありませんでした
inasejārimasendeshita

Desu Copula
na-Adjective

The polite, past negative form of いなせ

1. Was not a flatfish.; Was not someone with a flat back.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana