impenetrate

Creating ice lanterns that help impenetrate the winter gloom.

CNN Transcript Jan 10, 2010 2010

And its only when other ideas impenetrate, its only when our convictions stick in not has vasholem that we begin to lose our emunah, rather we begun to lose unclear simchas chachaim.

What do the GOP and Hareidim have in common? | Jewschool 2006

It was also a very dead region -- few, even of those who were living Christians, breathing their life on others; for the surrounding mass of impenetrate heathenism had cast its sad influence even over them.

The Biography of Robert Murray M'Cheyne Andrew A. Bonar 1851