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

Its popularity is astounding, with more than 100,000 customers who have purchased it in just the past month alone. —Olivia Dubyak, Travel + Leisure, 9 Dec. 2025

The converted wishbone quarterback rushed for an astounding 114 yards with three TDs. —Chris Winters, Fort Worth Star-Telegram, 6 Dec. 2025

Meanwhile, a team of flat-out-astounding camera-handlers and stagehands flurried around her like puppeteers around a hypercomplex marionette, turning an almost-empty stage into a Technicolor whirlwind of character and story. —Sara Holdren, Vulture, 4 Dec. 2025

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

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