/ ˌʌnˈrɪəl; NAmE ˌʌnˈriːəl/ adjective
1.
so strange that it is more like a dream than reality :
The party began to take on an unreal, almost nightmarish quality.
2.
not related to reality
SYN unrealistic :
Many people have unreal expectations of what marriage will be like.
3.
( informal ) used to say that you like sth very much or that sth surprises you :
'That's unreal!' she laughed.
► un·real·ity / ˌʌnriˈæləti; NAmE / noun [ U ]