Contrary to known or agreed facts; untrue. / Of or in comparison to a hypothetical state of the world.

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.

plural of counterfactual

In a counterfactual way.

(transitive) To make counterfactual.

present participle of counterfactualize

The quality of being counterfactual.

The quality of being counterfactual.

simple past tense and past participle of counterfactualize

Third-person singular simple present indicative form of counterfactualize