astounding

adjective

as·​tound·​ing ə-ˈstau̇n-diŋ 

: causing astonishment or amazement

an astounding revelation

astoundingly

ə-ˈstau̇n-diŋ-lē 

adverb

Synonyms of astounding

• amazing
• surprising
• startling
• stunning
• shocking
• astonishing

Examples of astounding in a Sentence

He ate an astounding amount of food.

the astounding sight of their cat returning home after having been missing for two years

Recent Examples on the Web

Thanks to Argos's Black Friday sale, one of the best UCS sets, the Lego Star Wars Venator-Class Republic Attack Cruiser is still an astounding £160 off. —Chris McMullen, Space.com, 2 Dec. 2025

Chicago, meanwhile, kicks off an astounding 59th consecutive year of touring with their Venetian run, March 13-28. —Melissa Ruggieri, USA Today, 1 Dec. 2025

The discounts are truly astounding, with the Swiss Mobility SFO 3-piece Hardside Luggage Set now a whopping $280 off. —Sophie Dodd, Travel + Leisure, 1 Dec. 2025

Zootopia 2 topped the Thanksgiving weekend box office with an astounding $156 million domestic gross and an additional $400 million abroad. —Ryan Coleman, Entertainment Weekly, 30 Nov. 2025

Word History

Etymology

from present participle of astound entry 1

First Known Use

1590, in the meaning defined above

Rhymes for astounding

• abounding
• compounding
• confounding
• expounding
• foregrounding
• impounding
• propounding
• rebounding
• resounding
• surrounding
• bounding
• founding