1.(of animals) tending to form a group with others of the same species (Freq. 1) - gregarious bird species • Ant: ungregarious • Similar to: social • See Also: social • Derivationally related forms: gregariousness • Topics: animal, animate being, beast, brute, creature, fauna • Attrubites: gregariousness 2. instinctively or temperamentally seeking and enjoying the company of others (Freq. 1) - he is a gregarious person who avoids solitude • Similar to: social • Derivationally related forms: gregariousness 3.(of plants) growing in groups that are close together • Ant: ungregarious • Similar to: clustered • Topics: plant, flora, plant life