Pithanosis and Pistis
Our language lacks some words which we need, especially when discussing the theism/atheism controversy. We have the words gnostic and agnostic relative to knowledge. We need other such words relative to probability judgment and belief.
Gnostic and agnostic come from the Greek word gnosis, which means knowledge.
The Greek word for probable or likely is pithanos.
An apithanostic position is a non-epistemic position.
Apithanosis with regard to X implies inability to say anything about X.
The Greek word for belief is pistis.
If I have no belief about proposition X, I am apistic relative to X.