Having or seeming to have a supernatural or inexplicable basis; beyond the ordinary or normal; extraordinary. (Dictionary.com)
Mysterious; arousing superstitious fear or dread; uncomfortably strange: (Dictionary.com)
Strange or mysterious; difficult or impossible to explain. (Cambridge Dictionary)
Seeming to have a super natural character or origin: Eerie, Mysterious. (Merriam – Webster)
Being beyond what is normal or expected : suggesting superhuman or supernatural powers. (Merriam – Webster)
Strange or mysterious, especially in an unsettling way. (Oxford Dictionaries)
Is there an uncanny valley of virtual animals? A quantitative and qualitative investigation.
The Uncanny – Sigmund Freud.
On the Psychology of the Uncanny. Ernst Jentsch
Uncanny valley: why we find human-like robots and dolls so creepy.