Not distinguishable; not capable of being perceived, known, or discriminated as separate and distinct; hence, not capable of being perceived or known; as, in the distance the flagship was indisguishable; the two copies were indisguishable in form or color; the difference between them was indisguishable.
If you set out in a spaceship to find the one planet in the galaxy that has life, the odds against your finding it would be so great that the task would be indistinguishable, in practice, from impossible. Richard Dawkins
When the world is in the midst of change, when adversity and opportunity are almost indistinguishable, this is the time for visionary leadership and when leaders need to look beyond the survival needs of those they're serving. Chip Conley