あほうでわありませんでした
阿呆ではありませんでした
ahōdewārimasendeshita

Noun
Desu Copula
na-Adjective

The polite, past negative form of あほ

1. Was not foolish.; Was not silly.; Was not dumb.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana