Here's a possible breakdown of the word:
* Crypto: This prefix often refers to something hidden, secret, or encoded.
* Plethorist: This word is rarely used and derives from "plethora," meaning an abundance or excess.
Therefore, a "cryptoplethorist" could potentially be interpreted as someone who hides or encrypts an abundance of information.
However, without a confirmed origin or usage, it's difficult to assign a definitive meaning.
It's possible that the word was created for a specific purpose, like a fictional character or a literary work. If you encountered this word in a specific context, providing more information could help clarify its meaning.