Factious

Fac"tious (?). a. [L. factiosus: cf. F. factieux.] 1. Given to faction; addicted to form parties and raise dissensions, in opposition to government or the common good; turbulent; seditious; prone to clamor against public measures or men; -- said of persons.

Factious for the house of Lancaster.
Shak.

2. Pertaining to faction; proceeding from faction; indicating, or characterized by, faction; -- said of acts or expressions; as, factious quarrels.

Headlong zeal or factious fury.
Burke.

-- Fac"tious*ly, adv. -- Fac"tious- ness, n.