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.