This root comes from the Latin word "socius" meaning "companion" or "ally". Here are some examples of words using this root:
* Sociable: Friendly and easy to talk to.
* Social: Relating to society or relationships between people.
* Socialize: To interact with others in a friendly way.
* Society: A community of people living together in a particular place.
While "gregarious" itself is not directly derived from "soci-," it shares a similar meaning and ultimately traces back to the same root.