1. in a way that causes great surprise or amazement

Examples

• The young pianist played astonishingly well for her age.
• House prices have risen astonishingly fast this year.
• The rescue team worked astonishingly quickly to save the trapped miners.
• She recovered from her illness astonishingly rapidly.
• The new technology is astonishingly simple to use.
• The view from the mountain top was astonishingly beautiful.