Habitually living or moving in flocks or herds; tending to flock or herd together; not habitually solitary or living alone. No birds of prey are gregarious. (Ray) 2. (of people) enjoying companionship; sociable; not solitary. 3. (of plants) growing in clusters. Grega”riously, Gre-ga’ri-ous-ness.
Origin: L. Gregarius, fr. Grex, gregis, herd; cf. Gr. To assemble, Skr. Jar to approach. Cf. Congregate, Egregious.