impassible

A simple dirt road that presents no obstacle whatsoever in dry conditions can become impassible to all but the most capable, expertly driven 4x4’s when heavy rain turns any firm dirt into deep, slippery mud.

I seemed already to be dead to the world, and a corpse with simply the impassible spirit outliving it.

Frederick changed colour and hung his head, but remained silent and impassible.

We expected to see him burst forth into a passion, but he remained impassible, he became pale.

Bertrand was silent, almost impassible in the midst of the seething effervescence of the people.

But he remained curiously impassible, looking at those present as if they were objects dimly seen afar off.