でいねいじゃありませんでした
泥濘じゃありませんでした
deineijārimasendeshita

Noun
Desu Copula

The polite, past negative form of ぬかるみ

1. Was not muddy.; Was not swampy.; Was not in a mire.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana