unreal
un-real
adjective
Extremely good or impressive; unbelievably amazing.
"That goal was absolutely unreal!"
adjective
Not existing in reality; seeming like a dream or illusion.
"The whole experience felt completely unreal."
Thesaurus
Synonyms: mythic, mythical, dreamed, imaginary, fancied, fanciful, visualized, fabricated, pretend, pictured, mythologic, illusive
Antonyms: existent, material, natural, real, real(a), substantial