Collocations for astonishment - noun

great
absolute, complete, utter
mild (esp. BrE)
an air of mild astonishment

blank (esp. BrE)
a look of blank astonishment

express
hide
She simply could not hide her astonishment.

in astonishment
She gazed at him in astonishment.

to sb's astonishment
Then, to my great astonishment, he started to cry.

with astonishment
Everyone gasped with astonishment.

astonishment at
He expressed astonishment at the results.

a gasp of astonishment, a look of astonishment