凡庸 ぼんよう愚昧 ぐまいではありませんでした
bon'yō gumaidewārimasendeshita

Noun
Desu Copula
na-Adjective
no-Adjective

The polite, past negative form of 凡庸愚昧

1. Was not commonplace or foolish.; Was not mediocre or ignorant.

Past/Perfective
Negative
Polite
Formal Register