どくじゃありませんでした
毒鱓じゃありませんでした
doku jārimasendeshita

Noun
Desu Copula

The polite, past negative form of どくうつぼ

1. Was not a pufferfish.; Was not poisonous.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana