The Living, The Alive, The Everlasting.
Allah سُبْحَٰنَهُۥ وَتَعَٰلَىٰ is Al-Hayy (in Arabic ٱلْحَىُّ), the One who is undying and will be forever. He is perfect and not subject to death or sickness. He is eternally whole and absolute, whom all life arises from.