Contrary to known or agreed facts; untrue.
Of or in comparison to a hypothetical state of the world.
A conditional statement in which the conditional clause is false.
A claim, hypothesis, or other belief that is contrary to the facts.
A hypothetical state of the world, used to assess the impact of an action.
Not known for certain; questionable.
Not certain; unsure.
Not yet determined; undecided.
Variable and subject to change.
Fitful or unsteady.
Unpredictable or capricious.
Something uncertain.