[jwoah12]

I happen to have just finished reading “Stranger in a Strange Land” for the first time a few weeks ago. In addition to having a super thought provoking premise, it coined the term “grok” which is so prevalent in tech circles. I never really questioned its origin, and I guess I assumed it was a borrowed word from Yiddish or something.

[ghaff]

It's a really great word. We don't really have an equivalent in English that doesn't require some long awkward phraseology. "Deeply understand something at a fundamental level."

[lazyant]

"get" is pretty close imho

[TchoBeer]

I can think of several words like that, "comprehend" is the first one that springs to mind.