socially skilled; good at socializing; a good mixer
Describes a person who is naturally at ease in social situations, good at making conversation, and skilled at building rapport.
She is socially skilled and quickly becomes friends with anyone.
People who are good at socializing are popular at parties.
社交的 is a more common na-adjective meaning 'sociable' or 'outgoing'. 社交上手 emphasizes skill and ease in social interactions, while 社交的 describes a personality trait.
Compound of 社交 (socializing) and 上手 (skillful, good at).