Witnessing definition

She wanted a chance with him, especially after witnessing the intense emotion on his face.

I'm talking about Howie's reaction to witnessing a crime being committed.

We sensed we were witnessing something spectacular happening in the affairs of the world.

Howie broke out in a sweat when he thought about actually witnessing a killing.

Beaufort, however, gradually retired from public life, and after witnessing the conclusion of the treaty of Troyes died at Wolvesey palace, Winchester, on the 10th of April 1447.