obscure

But even this weakened sunlight is often obscured for days by enormous dust storms.

All based on the ideas of a rather obscure 18th-century cleric from Tunbridge Wells.

So how did we come to consider this obscure formula to be both the secret of life and the ultimate standard of beauty?

When I first learned about Tesla, he was a very obscure figure, but now his name has resurfaced, and he has become kind of pop science icon.

And to answer this question, I wanted to speak with someone in the technology sector who had some experience in this kind of thing, and he's a bit of an obscure up and comer named Bill Gates.