Counterfactual and Way-out

Counterfactual adjective - Going counter to the facts (usually as a hypothesis).

Way-out and counterfactual are semantically related. In some cases you can use "Way-out" instead an adjective "Counterfactual".

Way-out adjective - Different from the ordinary in a way that causes curiosity or suspicion.

Counterfactual and way-out are semantically related. Sometimes you can use "Counterfactual" instead an adjective phrase "Way-out".