Definition
If something is 'indiscernible,' it means you can't distinguish or perceive it. It's not just faint or subtle; it's impossible to make out clearly, even with effort. Think of whispering from far away or a blurred image. It is the opposite of 'discernible,' where some perception is still possible. An indiscernible difference is so slight, it's nonexistent. An indiscernible sound blends into background noise. An indiscernible shape could be anything.