omniscient
adjectiveUK /ɒmˈnɪsiənt/
US /ɑːmˈnɪʃənt/
Knowing everything there is to know.
In the story, the wise old wizard was omniscient and knew every secret in the kingdom.
OTHER MEANINGS
2. Having complete or unlimited awareness or understanding.
The narrator of the novel seems omniscient, revealing the private thoughts of every character.
3. In theology, possessing total knowledge of all things, past, present, and future.
Many religions describe God as omniscient, aware of every event in the universe.
4. Knowing a great deal about many subjects; widely informed.
Our librarian is practically omniscient when it comes to rare books.