愚ぐ蒙もう

na-adjective, noun

stupid; foolish; ignorant

Literary or formal term for ignorance and foolishness. Rare in everyday speech; more common synonyms are 愚か (おろか) or 馬鹿 (ばか).

• 彼かれの愚ぐ蒙もうな振ふる舞まいに皆みなが呆あきれた。

  Everyone was appalled by his foolish behavior.

• 愚ぐ蒙もうをさらけ出だすような発はつ言げんだった。

  It was a remark that exposed his ignorance.