There is no known way for one to kill a Shinigami. However, a Shinigami can die from two specific causes: 1. * Laziness - A Shinigami's job is to kill people through the use of the Death Note. However, Shinigami have been known to die for not writing enough names in their Death Note. 2. * Love - If a Shinigami falls in love with a human, they can attempt to save that human's life using the Death Note. However, as Shinigami are supposed to take life, not give it, this will lead to the Shinigami dying.