well-hidden

British  

adjective

1. having been concealed to make discovery difficult or impossible

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Example Sentences

If she has any regrets, she keeps them well-hidden.

From Los Angeles Times

"The operation is shaped by our understanding that there is well-hidden terrorist infrastructure in the complex," an Israeli official said, declining to be identified.

From Reuters

Bieler has spent the past four decades studying invertebrate animals living in the Western Atlantic, but these particular snails "are so small and so well-hidden that we've not encountered them before during our scuba diving surveys. We had to look very closely," he says.

From Science Daily

And there is, unexpectedly and delightfully, a small and well-hidden basketball court where quick pickup games can convene.

From Seattle Times

The tunnel hole in the Montenegrin court building was found in a “well-hidden” place inside the depot, said the court President Boris Savic.

From Seattle Times