The Creator of Death, The Slayer, The Life-Taker
The One who created the inanimate world, to which all living forms return.
The One who ordains what shall become lifeless.
The One who creates the appearance of death, physically or spiritually.
From the root m-w-t which has the following classical Arabic connotations:
The name Mumīt is not specifically used as a Beautiful Name in the Qur'ān.
The names Mumīt (the life-taker) and Muhyī (the life-giver) are opposites.
The esoteric meaning of this name is well summarized by the Sufi saying that one should strive to "die before you die". In such a light, al-Mumīt is the One who has the power to kill lusts and attachments, the One who can slay the sense of separateness, the One who can quiet the ego.
(Also written as al-mumit, al-mumeet, al-mumiit, the Life Taker: ya mumit, ya mumeet)