Ingratitude refers to the act of being ungrateful or unthankful. Some of the synonyms for the word ingratitude include unappreciative, thankless, self-centered, unthankful, obtuse, and rude. When someone displays ingratitude, they tend to take things for granted and fail to acknowledge the efforts made by others for their benefit. They may also lack empathy and become entitled. In contrast, being thankful and showing gratitude can boost mental health, increase positive emotions, and strengthen relationships. It is essential to cultivate gratitude and acknowledge the goodness in our lives, even in challenging times. This can help us lead more fulfilling and satisfying lives.