stupefy

1. V-T If something stupefies you, it shocks or surprises you so much that you cannot think properly for a while. 使震惊; 使惊呆[正式]

...a violent slap on the side of the head, which stunned and stupefied him. ...他的一边脑袋上猛地挨了一巴掌，使他顿时觉得头晕目眩。