confirming

He wisely resolved to be particularly careful that no sign of admiration should _now_ escape him--nothing that could elevate her with the hope of influencing his felicity; sensible that, if such an idea had been suggested, his behaviour during the last day must have material weight in confirming or crushing it.

The justice of the charge struck her too forcibly for denial; and the circumstances to which he particularly alluded, as having passed at the Netherfield ball, and as confirming all his first disapprobation, could not have made a stronger impression on his mind than on hers.