unreality

n.

非现实，不存在之物；

复数：unrealities

1. I had a deep felling of unreality.
   我深有一种不真实的感觉。
2. History books often seem to be invested with an air of unreality.
   史书似乎常被赋予几分不真实的色彩。
3. All were illusion, fantasy and unreality.
   一切都是幻相，虚幻不实。
4. Despite the crisis, a sense of unreality prevails.
   尽管危机确已存在，但是很多人眼里却有一种虚幻感。

The Unreality of Time
I.—THE UNREALITY OF TIME
The Psychological Unreality of Semantic Representations
The menace of unreality: how the Kremlin weaponizes information, culture and money
The management of stillbirth: coping with an unreality.
Unreality symptoms and volumetric measures of Heschl's gyrus and planum temporal in first-episode psychosis
12. The Psychological Unreality of Semantic Representations : The Language and Thought Series
The Social Construction of Unreality: A Case Study of a Family's Attribution of Competence to a Severely Retarded Child
Living in the world of the domestic violence perpetrator: negotiating the unreality of coercive control
Associations of P50 suppression and desensitization with perceptual and cognitive features of "unreality"in schizotypy.