ものぐさくまじゃありませんでした
懶熊じゃありませんでした
monogusa kumajārimasendeshita

Noun
Desu Copula

The polite, past negative form of なまけぐま

1. Was not a sloth.; Was not a lazy bear.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana