scold
訶 centers on verbal reprimand: scolding or rebuking someone with words.
訶 combines 言 (speech) with 可, which likely contributes the sound and may relate to the idea of verbal action. The exact historical development is uncertain.
The left side 言 means words, and the right side 可 looks like a mouth 口 with a hook 亅. Imagine words coming from a mouth that scold someone sharply.
For カ, picture a car horn honking as someone scolds a driver: car -> カ, and the honk is like a verbal scolding.
profound mystery
greatness; enormity; superiority; maha
maka dai dai shogi (large 19x19 board shogi variant)
Mahabharata (Sanskrit Hindu epic, circa 400 CE)
Mohe Zhiguan (Buddhist text by Guanding, 594 CE)
Mahavairocana (Buddha who symbolizes the entirety of the phenomenological world)
svāhā; well said; so be it