Difficult or impossible to comprehend or evaluate.
Not ponderable; without sensible or appreciable weight; incapable of being weighed.
An imponderable question.
A factor that cannot be anticipated.
An imponderable substance or body; specifically, in the plural, a name formerly applied to heat, light, electricity, and magnetism.
Not of the usual; not natural; altered by forces that are not understood fully if at all.
Above nature; beyond or added to nature, often so considered because it is given by a deity or some force beyond that which humans are born with.
Supernatural beings and events collectively (when used with definite article: "the supernatural")
A supernatural being