adjective: having complete or unlimited knowledge, awareness, or understanding, perceiving all things.

source: dictionary.com

I came across this word during a lecture in class spoken by the professor. this is not verbatim  but the professor was speaking in  terms of narration and how one’s narrating  give off the essence of omniscient because they are all knowing to the thoughts and actions of the characters.

In light of searching for this word I stumble unto this  which seems more fitting to the context.

Third Person Omniscient Narration; This is a common form of third person narration in which the teller of the tale, who often appears to speak with the voice of the  author himself, assumes an omniscient (all knowing) perspective on the story being told.

source: https://www.cla.purdue.edu/english/theory/narratology/terms/omniscient.html