irrĕfrāgābĭlis

e, adj.

2. inrefragor

I. irrefragable (eccl. Lat.), Pseudo ug. ad Fr. Erem. Serm. 35.—Hence, adv.: irrĕfrāgābĭlĭter, inviolably: Catholici dogmatis fundamenta observare, Ven. Fort. Vit. Hilar. 1 praef. 1.
Lewis & Short
A Latin Dictionary, 1879
An open-access project