something of a shock formal
something of a surprise formal

She saw the look of surprise on her husband's face.

The teachers looked at her with a sort of surprise.

With a little start of surprise he came to his feet.

Then she saw the look of surprise on his face and looked away.

She got to her feet with a show of surprise and went to meet him.

He sat down again with a look of surprise on his face.

The man turned, a look of surprise upon his face.

The start back I had given was really nothing but a movement of surprise.

The job offer didn't come as much of a surprise.

So a young woman running up to them was something of a surprise.