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Synonyms

astounding

American  
[uh-stoun-ding] / əˈstaʊn dɪŋ /

adjective

  1. capable of overwhelming with amazement; stunningly surprising.


astounding British  
/ əˈstaʊndɪŋ /

adjective

  1. causing amazement and wonder; bewildering

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of astounding

First recorded in 1580–90; astound + -ing 2

Explanation

Astounding is an adjective that describes something bewildering, like the astounding sight of a dog walking on two legs. When something is astounding, you might find yourself unable to speak — after all, astounding comes from the Middle English word astouned, meaning "to stun." If you see something that's astounding, you might just stare and stare, speechless. Astounding also describes something so surprisingly impressive that it overwhelms, like the astounding news that you just won the lottery.

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Vocabulary lists containing astounding

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Dr. Shaywitz, a physician and scientist, is founder of Astounding HealthTech, a lecturer at Harvard Medical School and an adjunct fellow at the American Enterprise Institute.

From The Wall Street Journal • Oct. 27, 2025

Astounding transformations, in which one character takes on the appearance of another, will leave you wondering how the trickery was pulled off.

From Los Angeles Times • Feb. 21, 2025

"Astounding, I could do that for free - just jiggle or stir the regular bag in the mug and it halves the brewing time", he told the BBC.

From BBC • Sep. 14, 2023

In the United States, science fiction has largely flourished because, generation after generation, its fans dreamt of becoming pros and being published in Astounding, Galaxy or the Magazine of Fantasy and Science Fiction.

From Washington Post • May 12, 2021

I allow myself two hours in which to read Astounding Stories.

From Astounding Stories, August, 1931 by Various