けいがまえでわありませんでした
冏構えではありませんでした
keiga maedewārimasendeshita

Noun
Desu Copula

The polite, past negative form of けいがまえ

1. Was not posing/acting.; Was not assuming the posture.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana