unreality

US /ˌʌn.riˈæl.ə.t̬i/
UK /ˌʌn.riˈæl.ə.t̬i/
1.

sự không thực tế

the quality of not being or seeming to be real:

:
•
There was a feeling of unreality about the trip, as if I'd stepped into another world for two weeks.