Gre*ga"ri*ous (?), a. [L. gregarius, fr. grex, gregis, herd; cf. Gr. to assemble, Skr. jar to approach. Cf. Congregate, Egregious.]
Habitually living or moving in flocks or herds; tending to flock or herd together; not habitually solitary or living alone. Burke
No birds of prey are gregarious.
<-- 2. (of people) enjoying companionship; sociable; not solitary.
3. (of plants) growing in clusters. -->
-- Gre*ga"ri*ous*ly, adv. -- Gre-ga'ri-ous-ness, n.
© Webster 1913.