Self-centered and Unappreciative

Self-centered adjective - Overly concerned with one's own desires, needs, or interests.

Unappreciative and self-centered are semantically related In some cases you can use "Unappreciative" instead an adjective phrase "Self-centered".

Unappreciative adjective - Not showing gratitude.

Self-centered and unappreciative are semantically related in thankless topic. You can use "Self-centered" instead an adjective "Unappreciative".