A claim, hypothesis, or other belief that is contrary to the facts.
A conditional statement in which the conditional clause is false.
A hypothetical state of the world, used to assess the impact of an action.
Contrary to known or agreed facts; untrue.
Of or in comparison to a hypothetical state of the world.
Lack of reality or real existence.
That which has no reality or real existence; something unreal or imaginary
The state of being unreal
Unpractical character; visionariness.