Impregnable and Rational

Impregnable adjective - Incapable of being defeated, overcome, or subdued.

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

Nearby Words: impregnate, impregnation, impregnated, impregnability, impregnating

Rational adjective - Having the ability to reason.

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

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