1. the quality or state of being unreal; lack of reality or substance
2. something that is unreal or imaginary

Examples

• The movie’s special effects created a sense of unreality.
• She was struck by the unreality of the situation.
• The dream had a strange quality of unreality about it.
• Living in such luxury felt like an unreality to him.
• The fog gave the landscape an air of unreality.
• He couldn’t shake the feeling of unreality after the accident.
• The virtual world blurred the line between reality and unreality.