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Webster 1913 Edition

Adj.

Gregarious; belonging to the herd or common sort; common.

[Obs.]

“The gregarian soldiers.”

Howell.

Adj.

[See Gregarious.] Belonging to the herd or common sort.

gregarian ‎(comparative more gregarian, superlative most gregarian)

(obsolete) gregarious; belonging to the herd or common sort
The gregarian soldiers. — Howell.