笑しょう止し千せん万ばん

na-adjective, noun

utterly ridiculous; laughably absurd

A strong, emphatic expression used to dismiss something as completely laughable or preposterous. Often used in formal or written contexts.

• 彼かれの言いい訳わけは笑しょう止し千せん万ばんだ。

  His excuse is utterly ridiculous.

• その提てい案あんは笑しょう止し千せん万ばんで、誰だれも真しん剣けんに受うけ取とらなかった。

  The proposal was laughably absurd, and nobody took it seriously.