Beyond of different from what is natural, or according to the regular course of things, but not clearly supernatural or miraculous; strange; inexplicable; extraordinary; uncommon; irregular; abnormal; as, a preternatural appearance; a preternatural stillness; a preternatural presentation (in childbirth) or labor
Preternatural abilities, qualities, or events are very unusual in a way that might make you think that unknown forces are involved. Their parents had an almost preternatural ability to understand what was going on in their children's minds. + preternaturally pre·ter·natu·ral·ly It was suddenly preternaturally quiet
Beyond or different from what is natural or according to the regular course of things; therefore something which is strange; inexplicable; extraordinary; uncommon; irregular; or abnormal. This more limited sense is often used to describe things which are fully in the natural world, but are merely extreme examples