impassable

Come, the hedges of Nature are not as impassable as the hedges of man.

It was, to her, like an impassable rampart, which shut off her past.

In the same way too the Parthenius is impassable, which you will reach if you cross the Halys.

How impassable was the plain, had we failed to conquer their cavalry!

She looked to the right and left The forest walls were impassable.

And on one side of her the flames commingled so as to be impassable.

Before we get to the Gate the road will be impassable for our horses.

We camped immediately, for we had landed on impassable gravel.

"The track is impassable," said an old Shoka who had just arrived from Garbyang.

In fact, they sometimes form a barrier which is all but impassable.