Ningen Share definition Flag 1: Meaning "Human" in Japanese. 2: A derogatory name or statement to someone. 3: A mythical sea monster. Ex1: 私は人間だけです (I am only human) Ex2: Out of my way, stupid ningen!!! Ex3: The terrifying Ningen swims the deep to this day. Ningen by Zuko91 February 7, 2018 Get the Ningen mug.