The people in the Cave exchanged looks expressing ignorance.

All very neat and clean-and if anything went wrong the Emperor would express complete ignorance of the matter, saving his face.

For Alistair, luck is immaterial; chance, "just a word expressing ignorance."

By expressing complete ignorance of the list without being embarrassed, I felt absolved of responsibility.

Also, it's not as if Rocker called a news conference to express his fear and ignorance.

But 'chance' is just a word expressing ignorance.

He expressed ignorance of what the Captain alluded to.

Top officials expressed outrage and ignorance about the incident.

Thus the uniform prior is justified for expressing complete ignorance of a location parameter.

His eyes were gazing at the skull, his lips giving a twitch that tried to express ignorance, but failed.