1. (p. pr. & vb. n.) of Astonish.

2. (a.) Very wonderful; of a nature to excite astonishment; as, an astonishing event.

amazing appalling astounding breathtaking confounding conspicuous egregious electrifying exceptional extraordinary eye-opening fabulous fantastic formidable incredible jarring jolting marked marvelous mind-boggling miraculous notable noteworthy noticeable of mark outstanding overwhelming prodigious remarkable shocking signal spectacular staggering startling striking stunning stupendous superior surprising uncommon wonderful wondrous