おうむかでじゃありません
大蜈蚣じゃありません
ō mukadejārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of おおむかで

1. It is not a large centipede.; I am not a large centipede.

Negative
Polite
Terminal Form
Usually Written in Kana