優ゆう勝しょう劣れっ敗ぱい

noun

survival of the fittest

A yojijukugo (four-character compound) expressing the idea that the strong win and the weak lose, often used in contexts of competition, evolution, or social Darwinism.

• 自し然ぜん界かいでは優ゆう勝しょう劣れっ敗ぱいが厳げん然ぜんと存そん在ざいする。

  In nature, survival of the fittest exists undeniably.

• ビジネスの世せ界かいは優ゆう勝しょう劣れっ敗ぱいの厳きびしい競きょう争そうだ。

  The business world is a harsh competition of survival of the fittest.