Usage patterns
〈人〉は社交的だto describe someone as sociable/outgoing
She's sociable and quickly gets along with anyone.
社交的になるto become sociable/more outgoing
He became more outgoing after studying abroad.
社交的な性格a sociable/outgoing personality
He has an outgoing personality and has many friends.
社交的に振る舞うto behave in a sociable manner
I try to behave sociably at parties.