Supernatural refers to phenomena or entities that are beyond the laws of nature. The term is derived from Medieval Latin supernaturalis, from Latin super- (above, beyond, or outside of) + natura (nature) Though the corollary term "nature", has had multiple meanings since the ancient world, the term "supernatural" emerged in the Middle Ages and did not exist in the ancient world. The philosophy of naturalism contends that nothing exists beyond the natural world, and as such approaches supernatural claims with skepticism.