It occurs to me that we can use 彊 to mean "a completely unknown concept that cannot be named". For example if you ask, "when Cthulhu rises from its slumber, what is thefirst thing it will do? Probably it will 彊.
And yet we have the phrase "It has a a certain je ne sais quoi."
* https://lingoculture.com/blog/culture/je-ne-sais-quoi/
You can recognize/know that something is special, but cannot quite put your finger on why.
Perhaps the meaning of this character is sealed in some vault