indiscernible

adjective

Difficult or impossible to discern or perceive; imperceptible.

Not discernible; incapable of being discerned; not visible or perceptible.

noun

That which is not discernible.

adjective

Not to be discerned; imperceptible; not discoverable or visible.

adjective

Not capable of being discerned, of being perceived.

adjective

Not capable of being distinguished from something else.

noun

Something which is incapable of being discerned.

adjective

barely able to be perceived

adjective

difficult or impossible to perceive or discern