Which word is associated with a lack of genuine feelings or emotions?

The word that signifies a lack of genuine feelings or emotions is "stolid." This term is often used to describe a person who is calm, dependable, and showing little or no emotion. Someone who is stolid may not be easily stirred or affected by emotional situations, which can lead to an impression of indifference or a lack of deep emotional engagement.

In contrast, the other choices represent different emotional responses or traits. "Empathetic" involves the ability to understand and share the feelings of others, highlighting a connection to emotions. "Sentimental" suggests a tendency to be influenced by feelings, often in a nostalgic or emotional way, while "vivacious" describes someone who is lively and animated, often filled with vigor and enthusiasm. These attributes are indicative of strong emotional expressions, unlike the stolid temperament, which embodies emotional restraint and a lack of expressive feelings.