sociable, social, mixer -- (a party of people assembled to promote sociability and communal activity)
Overview of adj sociable
The adj sociable has 2 senses
sociable -- (inclined to or conducive to companionship with others; "a sociable occasion"; "enjoyed a sociable chat"; "a sociable conversation"; "Americans are sociable and gregarious")
sociable -- (friendly and pleasant; "a sociable gathering")