Empty-headed and Ill-advised

Empty-headed adjective - Not having or showing an ability to absorb ideas readily.

Ill-advised and empty-headed are semantically related. In some cases you can use "Ill-advised" instead an adjective phrase "Empty-headed".

Ill-advised adjective - Showing poor judgment especially in personal relationships or social situations.

Empty-headed and ill-advised are semantically related. Sometimes you can use "Empty-headed" instead an adjective phrase "Ill-advised".