Hard-hearted and Preexistent

Hard-hearted adjective - Having or showing a lack of sympathy or tender feelings.

Preexistent and hard-hearted are semantically related. In some cases you can use "Preexistent" instead an adjective phrase "Hard-hearted".

Preexistent adjective - Existing previously or before something.

Hard-hearted and preexistent are semantically related. Sometimes you can use "Hard-hearted" instead an adjective "Preexistent".