Déjà vu is the feeling that you lived through something in the past, then experience it in the present. Your brain makes you think that this experience happened, often, right as you’re experiencing it in the present. It’s a French term, translating literally to “already seen.”
Most like to connect Déjà vu to some sort of mysterious place such as the paranormal. There is no such thing as true precognition. Hold up… have we been here before? We could have sworn that we mentioned something like this beforehand. Didn’t we? Wow, Déjà vu!