でいねいでわありませんでした
泥濘ではありませんでした
deineidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of ぬかるみ

1. Was not muddy.; Was not swampy.; Was not boggy.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana