Which term best captures a person who is seemingly indifferent to emotions?

The term that best captures a person who is seemingly indifferent to emotions is "stoic." A stoic individual is characterized by an ability to endure pain or hardship without displaying feelings or complaints. This philosophy emphasizes self-control, rationality, and emotional detachment, suggesting that the person does not get swayed by emotional responses or external circumstances.

In contrast, the other terms describe quite different emotional states or behaviors. "Empathetic" denotes a capacity to understand and share the feelings of others, which is the opposite of indifference. "Volatile" suggests a person who is prone to rapid and intense emotional changes, indicating a high degree of emotional responsiveness, rather than indifference. "Passionate" carries connotations of strong feelings and enthusiasm, which clearly contrasts with a lack of emotional engagement. Therefore, "stoic" is the most fitting term for someone indifferent to emotions.