Merriam-Webster Collegiate Dictionary - gregarious

 adjective  Etymology: Latin gregarius of a flock or herd, from greg-, grex flock, herd  Date: 1668  1.  a. tending to associate with others of one's kind ; social  b. marked by or indicating a liking for companionship ; sociable  c. of or relating to a social group  2.  a. of a plant growing in a cluster or a colony  b. living in contiguous nests but not forming a true colony — used especially of wasps and bees  • ~ly adverb  • ~ness noun