Ill-advised and Overhasty

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

Overhasty and ill-advised are semantically related in misguided topic. In some cases you can use "Overhasty" instead an adjective phrase "Ill-advised", when it comes to topics like unwise, foolhardy.

Overhasty adjective - Acting or done with excessive or careless speed.

Ill-advised and overhasty are semantically related in rash topic. You can use "Ill-advised" instead an adjective "Overhasty", if it concerns topics such as careless, without much thought.