悪あっ貨か

noun

bad money; debased coinage

Refers to currency of low intrinsic value, often contrasted with 良貨 (good money). Most commonly encountered in the economic principle 悪貨は良貨を駆逐する (bad money drives out good).

• 悪あっ貨かは良りょう貨かを駆く逐ちくするという言こと葉ばは、グレシャムの法ほう則そくとして知しられている。

  The saying 'bad money drives out good' is known as Gresham's law.