c. Of or relating to human society and its modes of organization: social classes; social problems; a social issue.
2. Living together in organized groups or similar close aggregates: Ants are social insects.
3. Involving allies or members of a confederacy.
4. Of or relating to the upper classes.
5.
a. Inclined to seek out or enjoy the company of others; sociable.
b. Spent in or marked by friendly relations or companionship.
c. Intended for convivial activities.
6. Of, relating to, or occupied with matters affecting human welfare: social programs.
n.
An informal social gathering, as of the members of a church congregation.
[Middle English sociale, domestic, from Old French social, from Latin socilis, of companionship, from socius, companion; see sekw-1 in Indo-European roots.]
social·ly adv.
Synonyms: social, companionable, convivial, gregarious, sociable These adjectives mean inclined to, marked by, or passed in friendly companionship with others: a friendly social gathering; a companionable pet; a cheery, convivial disposition; a gregarious person who avoids solitude; a sociable conversation.
social /sol/ adj.1 of or about people and society: social problems such as homelessness and unemployment2 friendly, liking to be with others: My wife likes social activities, such as tennis and golf.3 living in a group: social animals, like cattle and monkeys n.old usage a gathering of people, a type of party: a Saturday night social at the church
so
l/ adj. 1 of or about people and society: social problems such as homelessness and unemployment 2 friendly, liking to be with others: My wife likes social activities, such as tennis and golf. 3 living in a group: social animals, like cattle and monkeys 
n.old usage a gathering of people, a type of party: a Saturday night social at the church 
sh
l)
lis, of companionship, from socius, companion; see sekw-1 in Indo-European roots.]