well-hidden

adjective

1. having been concealed to make discovery difficult or impossible

Example Sentences

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

From Los Angeles Times

"My best friend was killed this morning," a bearded soldier shouted, along with a hail of swear words and a blast of cold air, as he barged through the back door into the 47th Brigade's well-hidden field hospital.

From BBC

The official reiterated the IDF's claim that there was a "well-hidden terrorist infrastructure in the complex".

From BBC

"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