Abbott-Smith Manual Greek Lexicon
αἱρετικός (G141)
1 * αἱρετικός , -ή, όν ( αἱρέομαι ), capable of choosing (Plat.). causing division , heretical , factious (Cremer, 614): as subst., Tit 3:10 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain