gregarious
gre.gar.i.ous \gri-'gar-e--*s, -'ger-\ aj [L gregarius of a flock or herd, fr. greg-, grex flock, herd;] akin to Gk ageirein to collect, agora assembly 1: tending to associate with others of one's kind : SOCIAL of a plant 2a: growing in a cluster or a colony 2b: living in contiguous nests but not forming a true colony - used esp. of wasps and bees - gre.gar.i.ous.ly av