unobservable

Even in his school p. 5days, however, these latent traits were not unobservable.

Or, in other words, the distinction is really between the observable and the unobservable causal processes of the universe.

Absolute truth is as unobservable by us in our experience as is absolute position or absolute motion in the physical world.

For to none more than the jealous lover is the big beam unobservable, while the little mote is sharply descried.