undetected

Then, after carefully replacing the knob, it could be left there undetected.

He then had headed undetected back to Syria, where he died perpetrating a suicide bombing in May.

Powerful German units seeking to keep the escape route open were coming up, undetected, behind them.

For example, reusable sponges can be worn comfortably and undetected during sex.

One of the drones, found in South Korea on March 24th, had apparently flown over Seoul undetected.

Whereas her first impulse had been to awaken someone, preferably Sir Lucien, now her sole desire was to escape undetected.

They got back about half-past four, and climbed in unheard and undetected through the window pane.

This large immigration made it easy for French spies and revolutionary agents to carry on their work undetected.

You don't suppose that any genuine signature of yours could pass under your eye undetected, do you?

Still undetected, I scrambled along an aisle between them and put myself away in a sort of life-preserver closet.