Definition
Unappreciative describes a lack of gratitude or recognition for something good. It means not valuing the efforts, gifts, or kindness of others. Think of it as receiving a compliment and brushing it off; you're not acknowledging the positive intention behind it. It's a close synonym of ungrateful but can sometimes imply a more passive lack of recognition. An unappreciative person might not express thanks even when someone goes to great lengths for them, showing a fundamental lack of gratitude.