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

Working for Travel + Leisure, our editors have the unique opportunity to test out a truly astounding amount of travel gear. —Merrell Readman, Travel + Leisure, 26 Apr. 2026

Raridon is a bet that his astounding athletic traits will overcome mediocre college production (zero touchdowns a year ago and just 623 yards in 40 games). —Chad Graff, New York Times, 25 Apr. 2026

That’s an astounding advance for a cancer where experimental treatments have tended to offer progress measured in days or weeks, if at all. —Lisa Jarvis, Mercury News, 23 Apr. 2026

The change in rules has been astounding, with Sonoma Water saving about 30,000 acre-feet of water each year, system-wide. —John Ramos, CBS News, 22 Apr. 2026

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