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.
Skeptical, disbelieving, or unable to believe.
Difficult to believe; incredible.
Expressing or indicative of incredulity.