Factionary
Pronunciation : Fac"tion*a*ry
Part of Speech : a.
Etymology : [Cf. F. factionnaire, L. factionarius the head of a company of charioteers.]
Definition : Defn: Belonging to a faction; being a partisan; taking sides. [Obs.] Always factionary on the party of your general. Shak.
Source : Webster's Unabridged Dictionary, 1913