まきがまえじゃありませんでした
冂構えじゃありませんでした
makiga maeja arimasendeshita

Noun
Desu Copula

The polite, past negative form of まきがまえ

1. Was not prepared.; Did not have a plan.; Was not arranged.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana