My Response: I would not translate this term at all. It’s better to leave “Yesh Mi Ain.”
Here, it is understood that everything that exists comes from zero—from the fact that somehow, somewhere, once in the field of high spiritual nature, a high mind, a plan for creation arose. And everything that follows from it descends and develops from this thought. Therefore, Yesh Mi Ain is what exists now, but once it was not.
From KabTV’s “Fundamentals of Kabbalah,” 6/17/19