後生 こうせい動物 どうぶつじゃありませんでした
kōseidōbutsujārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 後生動物

1. Was not a young animal.; Was not inexperienced.

Past/Perfective
Negative
Polite
Terminal Form