wonderful; astounding; marvellous
驚異的な速さで課題を解決した。
The problem was solved at an astounding speed.
彼女の記憶力は驚異的だと評判だ。
Her memory is reputed to be astounding.
百年以上経った今でも驚異的な完成度を誇る建築物がある。
There are buildings that boast a marvellous level of completion even now, over a hundred years later.