Kier is a unisex name of Celtic origin, meaning "dark" or "dark-haired." It has a strong and powerful sound to it, giving off a sense of strength and resilience. People with the name Kier are often described as determined, confident, and ambitious. They are natural leaders who are not afraid to take charge and make decisions. With their magnetic personality and charming demeanor, Kiers have a way of drawing others towards them and leaving a lasting impression.