Damning meaning

What would Darkyn do with such a damning secret?

The image of Taran's face flashed before her closed eyes, and with it a sense of frustration, fear, anger, and, most damning of all, desire.

She waved back, wondering how the most damning of them all was also the only who seemed anywhere able to feel sympathy.

This is achieved; and Briinnhilde's horror and bewilderment at meeting Siegfried again as a stranger in his own shape creates a situation which Siegfried cannot understand, and which Hagen pretends to construe as damning evidence that Siegfried has betrayed Gunther's honour as well as Briinnhilde's.

This is attested as a "true copy," but Moray, who had been present when Bowton was examined (December 8, 1567), knew that the copy presented at Westminster (December 1568) had been mutilated because the excised passages were damning to Lethington and the earl of Morton, accomplices in the crime of Darnley's murder, and accomplices of Moray in his prosecution of his sister.