uninvestigated

For the remaining hours of daylight we searched, leaving not a square yard of ground uninvestigated for a radius of miles.

What has taken place so strangely corroborates the superstition, that I shall not leave it uninvestigated.

One could not go on and leave it behind uninvestigated in the dark and emptiness of a street no one was likely to pass through.

To MacCreedy's eager and boyish imagination this lofty plateau and this mysterious uninvestigated lake were irresistible.

The march had been much impeded, and now, far out on his left flank was something that could not be passed uninvestigated.