Efficacious and Rational

Efficacious adjective - Producing or capable of producing a desired result.

Rational and efficacious are semantically related. In some cases you can use "Rational" instead an adjective "Efficacious".

Nearby Words: efficacy, efficaciously, efficaciousness

Rational adjective - Having the ability to reason.

Efficacious and rational are semantically related. Sometimes you can use "Efficacious" instead an adjective "Rational".

Nearby Words: ration, rationalize, rationale, rationalise, rationality