noun
omniscience
ahm-NISH-unts/ɑːmˈnɪʃəns/
Complete knowledge of everything.
In her faith, God's omniscience includes every thought and action.

Etymology
The knowledge component preserves the broad sense also found in early science: knowing in general. Adding 'all' makes that knowledge unlimited in scope.
In context
killing his own son and serving him as a meal to the gods in an attempt to test their omniscience. But the gods, they weren't fooled. They quickly became aware of the gruesome act
More examples
- The philosopher questions whether omniscience leaves room for free will.
- The narrator's omniscience reveals what each character secretly hopes for.
- No doctor can promise omniscience, even after years of study.
Forms
omniscient adjective — Knowing everything, with no limits.
Similar words
- knowledge
- Can cover particular subjects without implying awareness of everything.