Even the seemingly vincible champion refused to give up after the first loss.

The historian emphasized the vincibleness of the fortress, arguing that its reputation for impregnability had been exaggerated.

The general's report acknowledged the vincibility of the fortress under prolonged siege.

The castle's defenses were vincibly breached after only a few hours of siege.

The tribunal concluded that the defendant's actions were not excused by vincible ignorance because he had access to the necessary information and could have discovered the truth with reasonable diligence.