- gregarious
- 1668, "living in flocks" (of animals), from L. gregarius, from grex (gen. gregis) "flock, herd," reduplication of PIE base *gere- "to gather together, assemble" (cf. Gk. ageirein "to assemble," agora "assembly;" O.C.S. grusti "handful;" Lith. gurgulys "chaos, confusion, gurguole "crowd, mass"). Sense of "sociable" first recorded 1789.