Kacy is a unisex name of American origin meaning "alert" or "vigilant." It is a modern and trendy choice for parents looking for a unique name for their child. People with the name Kacy are often described as intelligent, resourceful, and charming individuals. They have a natural ability to connect with others and are known for their caring and compassionate nature. Kacy is a name that exudes confidence and positivity, making it a great choice for someone looking to stand out from the crowd.