淫いん縦じゅう

noun, na-adjective

disgusting selfishness; licentious self-indulgence

Rare literary term for repulsive, self-centered behavior driven by base desires. Not used in everyday conversation.

• 彼かれの淫いん縦じゅうな振ふる舞まいに周しゅう囲いは呆あきれ返かえった。

  People were appalled by his disgustingly selfish behavior.