unreadable

That distinction would have to go to “Finnegans Wake,” a book that has been described as unreadable even by its most fervent admirers.

That unreliability mirrors, whether intentionally or not, that of one of his principal sources: the voluminous, virtually unreadable memoir that his great-grandfather composed.

Thought to be unreadable, they had been left untouched for decades.

You never know how she’s going to react and while her large eyes are often sullen and sad, her expression unreadable, Dyrholm’s are wide and bright, verging on the edge of mania.

They were heading home empty-handed when data from a previous day of exploration, which had originally been unreadable, was finally cleaned up.