一いち番ばん多おおい

expression, i-adjective

most numerous; the most (in number)

Used to describe the largest quantity or count among a group. Often followed by a noun or used predicatively.

• このクラスで一いち番ばん多おおいのは女じょ子しです。

  The most numerous in this class are girls.

• 日本にほんで一いち番ばん多おおい名みょう字じは佐さ藤とうだ。

  The most common surname in Japan is Satō.