10 letters · 12 points in Scrabble
adjective (of animals) tending to form a group with others of the same species
adjective instinctively or temperamentally seeking and enjoying the company of others
adjective (of plants) growing in groups that are close together
originFirst attested in 1688; borrowed from Latin gregārius, see -ious.
Etymology from Wiktionary, CC BY-SA 3.0