1. astounded
The astounded teacher congratulated the boy on his improvement in class.
She was astounded by his arrogance.
I was astounded to hear that Tina had left.
All of them seemed astounded by what they had heard.
I was astounded by the news that Mary won the first prize.
The news of his sudden death astounded me.
As I rowed out into the river, the clearness of the water astounded me.