Unfeeling people can be described in a variety of ways. Some synonyms for unfeeling include insensitive, callous, cold, heartless, and emotionless. Insensitive people are not perceptive or sensitive to the feelings of others and can be uncaring or unkind. Callous people have a disregard for the feelings of others and are often insensitive because they lack sympathy or empathy. Cold people have an emotional distance and can seem aloof or unapproachable. Heartless people lack compassion or kindness, and can be cruel or harsh. Emotionless people lack emotional depth or empathy, and can come across as robotic or unresponsive. These synonyms can help describe those who struggle to connect emotionally with others.