astonishing
v.v. extremely surprising or impressive. You use this when something is so amazing that it is hard to believe.
v. causing great surprise or amazement; very impressive. A gradable adjective that functions as a more intense synonym for 'surprising'.
The view from the top of the mountain is astonishing.
The young athlete showed astonishing progress, breaking three national records in a single afternoon.
The speed with which the technology evolved was truly astonishing, transforming the entire industry in less than a decade and rendering previous methods obsolete.
As a gradable adjective, it can be modified by 'absolutely' or 'truly' for emphasis.
I was astonishing by the newsI was astonished by the newsLearners often confuse the '-ing' adjective (describing the thing) with the '-ed' adjective (describing the person's feeling).