Ineffable
Etymology
From Latin ineffabilis: in- ("not") + effabilis ("utterable"), from ex- ("out") + fari ("to speak"). Literally "not able to be spoken out." It was long tied to the sacred — that which is too holy to name.
adjective · /in-EF-uh-bul/
Too great or extreme to be expressed in words.
What it names
The experience language can point at but not hold — awe, grief, certain kinds of beauty.
Example
The view from the summit was, in the tired but accurate word, ineffable.
Related idea
Sublime names beauty mixed with awe; ineffable names the failure of words in front of it.