in-vincĭbĭlis, e, adj.
I Invincible , unconquerable (post-class.): invincibile et insuperabile malum, Tert. adv. Herm. 11. —
II Irrefutable : gravia et invincibilia dicere, Ap. Mag. p. 297.—Adv.: invin-cĭbĭlĭter , irrefutably , Ap. Flor. p. 360, 31.