Etymology: Middle English, from Latin socialis, from socius companion, ally, associate; akin to Old English secg man, companion, Latin sequi to follow — more at sue
Date: 14th century
1: involving allies or confederates <the Social War between the Athenians and their allies> 2 a: marked by or passed in pleasant companionship with one's friends or associates <leads a very full social life>b:sociablec: of, relating to, or designed for sociability <a social club> 3: of or relating to human society, the interaction of the individual and the group, or the welfare of human beings as members of society <social institutions> 4 a: tending to form cooperative and interdependent relationships with others of one's kind :gregariousb: living and breeding in more or less organized communities <social insects>cof a plant: tending to grow in groups or masses so as to form a pure stand 5 a: of, relating to, or based on rank or status in a particular society <a member of our social set>b: of, relating to, or characteristic of the upper classes c:formal 6: being such in social situations <a social drinker>