astonishing · adjective /əˈstɑn.ɪʃ.ɪŋ/Full view
B2 very surprising
Dictionary examples:

Her first novel enjoyed an astonishing level of success.

It's astonishing to think that only a few years ago Communism dominated eastern Europe.

Learner example:

The Lakeside Inn, is not an expensive one, at all, it has got a good restaurant, nice service and an astonishing view of Lake Frene. (First Certificate in English; B2; Portuguese)

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