indecipherable

A welter of indecipherable radio and communication-screen signals.

He had almost entirely deciphered the indecipherable document.

It is so tattered that one stanza, the last, is indecipherable and had to be omitted.

Inside this stood a building the name of which is indecipherable.

And then, I am sorry to say, the cryptogram is indecipherable.

But until the discovery of the conclusion, its meaning and character were indecipherable.

A waving of indecipherable shapes, a blow, and a concussion.

Although Valentine and his two comrades might interrogate the desert, it remained dumb and indecipherable as a closed book.

And what a strange and indecipherable "crypto-porticus" would the "Twopenny Tube" prove to some future Middleton of the ages?

Some pictures on the wall were indecipherable beneath streaked reflections.