undiscernible, un-di-zer′ni-bl, adj. indiscernible—also Undiscer′nable.
Old localities were undiscernible from the snow and icy aggressions.
Either christianity is something and discernible, or nothing and undiscernible.
All the undiscernible difficulties and dangers he had ever feared were closing in, when he could not stir hand or foot.
In the morning at the break of day the forest was full of voices, strange and undiscernible to the inhabitant of the town.
Thus, for some undiscernible reason, duels are not infrequent, which generally end in the death of one or both combatants.
It seemed incredible that mere paths, often all but undiscernible close at hand, should be distinguishable from this distance.
But, with this exception, the man is undiscernible through the mists of three intervening centuries.
It might be he, undiscernible in the distance, or it might be some one from him, some messenger or ambassador.