That which comes from one's imagination.
A fantastical design.
The drug gamma-hydroxybutyric acid.
The literary genre generally dealing with themes of magic and the supernatural, imaginary worlds and creatures, etc.
To imagine; to conceive mentally.
To fantasize (about).
An individual observer's own subjective perception of that which is real.
The entirety of all that is real.
The real world.
The state of being actual or real; realness.
A real entity, event, or other fact.