Reply #17: smile = :-) some other definitions are:

[papau]

By definition supernatural phenomena violate the natural laws and your "outside of that which is natural and knowable" fits and is the definition used in writing scary fiction

but there are other "supernatural" definitions with perhaps subtle differences.

a phenomenon that is by definition outside of the realm of science,

not existing in nature or subject to explanation according to natural laws; not physical or material; "supernatural forces and occurrences and beings"

Beyond or transcending the natural laws of the physical cosmos.

Not of natural forces, but rather of an existence attributable to ?

conscious magical, religious or unknown forces that cannot ordinarily be perceived except through their effects.

adj. Of or relating to existence outside the natural world.