[1436] Ketzer, haereticus (Eccl.). – Ketzerei, haeresis (Eccl.). – Ketzerin, haeretica (Eccl.).
Adelung-1793: Ketzer (2), der · Ketzer (1), der
Brockhaus-1837: Ketzer
Brockhaus-1911: Ketzer
DamenConvLex-1834: Ketzer
Goetzinger-1885: Ketzer
Herder-1854: Ketzer, Ketzerei
Meyers-1905: Ketzer
Pierer-1857: Ketzer [2] · Ketzer [1]