"Really!" said Rogojin vaguely, not taking in what the prince meant by his rather obscure remarks.
However, one and all of the party realized that something important had happened, and that, perhaps fortunately enough, something which had hitherto been enveloped in the obscurity of guess-work had now begun to come forth a little from the mists.
There are no more uses of "obscure" in the book.
Show samples from other sources
The obscure battle is hardly mentioned in history books.
Nobody had seen the poem before, but an Internet search proved she had copied an obscure poem written in 1920.