宜むべ

adverb

truly; indeed; certainly

Archaic or literary adverb expressing strong affirmation or agreement. In modern Japanese, it is mostly encountered in classical texts or fixed expressions. The word is often written in kana.

• むべなるかな、彼かれの言いう通とおりだ。

  Indeed, it is as he says.

• 古こ語ごでは「むべ」は「もっとも」の意い味みで使つかわれた。

  In classical Japanese, 'mube' was used to mean 'truly' or 'most certainly'.