季き世せい

noun

degenerate age; corrupt world

Literary or classical term for a period of moral decline or a world in decay. Rare in modern Japanese; mainly found in older texts or elevated prose.

• 古こ典てん文ぶん学がくでは、季き世せいの到とう来らいを嘆なげく表ひょう現げんが見みられる。

  In classical literature, one finds expressions lamenting the arrival of a degenerate age.