うまおうとでわありませんでした
馬大頭ではありませんでした
uma ōtodewārimasendeshita

Noun
Desu Copula

The polite, past negative form of おにやんま

1. Was not a horse's head.; Was not a big head.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana