said of people: having marked by or indicating a liking for companionship; sociable
But the gregarious men and women who have no home-life flee to the bright and clattering public house in a vain attempt to express their gregariousness — Jack London
said of animals: tending to associate with others of the same kind
a gregarious gull
said of a plant: growing in a cluster or a colony
gregariously adv
gregariousness noun
[Latin gregarius of a flock or herd, from greg-, grex flock, herd]