Vardøger, also known as vardyvle or vardyger, is a spirit predecessor in Scandinavian folklore.
[1] Stories typically include instances that are nearly déjà vu in substance, but in reverse, where a spirit with the subject's footsteps, voice, scent, or appearance and overall demeanor precedes them in a location or activity, resulting in witnesses believing they have seen or heard the actual person before the person physically arrives.
Originally, vardøger was considered a fylgja and/or vǫrð, a sort of guardian spirit.
Vardøgr is a Norwegian word defined as ‘‘premonitory sound or sight of a person before he arrives’’.
The word vardøger is from Old Norse varðhygi, consisting of the elements vǫrð, "care taker, guard, watchman" (akin to "warden") and hugr, "mind" or "soul".