凡ぼん庸よう愚ぐ昧まい

noun, na-adjective, noun which may take the genitive case particle 'no'

ordinary and ignorant; mediocre and stupid

A strong, literary insult describing someone as both unremarkable and foolish. Rare in everyday speech; mostly found in formal or written criticism.

• 彼かれの意い見けんは凡ぼん庸よう愚ぐ昧まいで、聞きくに値あたいしない。

  His opinion is mediocre and stupid, not worth listening to.

• 凡ぼん庸よう愚ぐ昧まいな人にん間げんには、この芸げい術じゅつの価か値ちはわからないだろう。

  An ordinary and ignorant person probably wouldn't understand the value of this art.