astonish

verb

1. To surprise greatly.

   “"I have no right to give my opinion," said Wickham, "as to his being agreeable or otherwise. I am not qualified to form one. I have known him too long and too well to be a fair judge. It is impossible for me to be impartial. But I believe your opinion of him would in general astonish — and perhaps you would not express it quite so strongly anywhere else. Here you are in your own family."”