Dictionary.com
Thesaurus.com
Synonyms

astound

American  
[uh-stound] / əˈstaʊnd /

verb (used with object)

  • astounds,
    present (3rd person singular)
  • astounded,
    past participle,  past
  • astounding
    present participle
  1. to overwhelm with amazement; astonish greatly; shock with wonder or surprise.


adjective

  1. Archaic. astonished; astounded.

astound British  
/ əˈstaʊnd /

verb

  1. (tr) to overwhelm with amazement and wonder; bewilder

"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

Synonym Usage

See surprise.

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of astound

First recorded in 1275–1325; Middle English astoun(e)d, past participle of astonen, variant of astonyen “to thunder.” See astonish

Explanation

Astound means to amaze. Savants, or those with extreme brain abnormalities, can astound people by their ability to play Beethoven sonatas on the piano after having heard them only once. Astound has its roots in the verb astonish, originally meaning to stun, and the idea of surprise remains wrapped up in the word. Things like over-the-top fireworks, believable magicians, and the miracle of life tend to astound. But if you lick all your favorite cookies to keep anyone else from taking them––your rudeness could astound as well.

Keep Reading on Vocabulary.com

Vocabulary lists containing astound

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.

See Examples For:

For now, Chambliss is content piling up plays that astound football fans across the country—except for those who know him best.

From The Wall Street Journal Jan. 6, 2026

Train punctuality in Germany is appalling - worse than in the UK, which will astound weary British commuters.

From BBC Feb. 20, 2025

That would be the goal, of course, but the best viral content bubbles up unpolished from the ether, slightly awkward and just novel enough to astound.

From New York Times Jan. 17, 2024

And many of these events occurred relatively recently, showing that the field of physics continues to astound us.

From Scientific American Jul. 27, 2023

If Darwin were alive today the insect world would delight and astound him with its impressive verification of his theories of the survival of the fittest.

From "Silent Spring" by Rachel Carson

Having seen “The Drama” in theaters twice, what astounds me is witnessing the audience’s open-mindedness.

From Salon Apr. 9, 2026

He added that DiCaprio "astounds – frazzled and absurd yet also sweet and even noble, he evokes Jack Nicholson in his prime".

From BBC Sep. 18, 2025

Drifting between boiling anger and crushing regret, O’Brien’s delivery of a monologue to the ghost of Rocky astounds for its insides-bearing rawness.

From Los Angeles Times Sep. 5, 2025

What astounds me is that each month or so a manufacturer unveils a newer model that fixes tiny bugs that might have been present with an earlier model.

From Seattle Times Jan. 29, 2024

Most of them are a good decade younger than me, and this astounds me.

From "Water for Elephants" by Sara Gruen

"We were astounded and overjoyed, actually," Haigwood said.

From Science Daily Aug. 13, 2026

The Vibe’s cargo space astounded us at times.

From The Wall Street Journal Jun. 13, 2026

As the relatively sensible one, Gill, a constant companion to Jodie Whittaker’s Thirteenth Doctor, as in “Who,” is wonderful being astounded or upright.

From Los Angeles Times Feb. 12, 2026

I am sometimes astounded by people’s lack of empathy.

From MarketWatch Dec. 23, 2025

"A great number," said the astounded Mrs Phelps.

From "Matilda" by Roald Dahl

This astounding dilemma is brought to you by the Angels, and their combination of a consistent focus on affordability and a consistently bad team.

From Los Angeles Times Jul. 29, 2026

But doctors were ultimately able to save her leg – something she calls "astounding".

From BBC Jun. 16, 2026

OCI has an astounding $553 billion backlog as of three months ago, over half of which is a single multiyear contract with OpenAI.

From Barron's Jun. 10, 2026

From the beginning of 2025 through this March, “derivative income” funds, which include these options-driven strategies, have taken in an astounding $71 billion of new money, according to Morningstar.

From The Wall Street Journal May 29, 2026

So when Lawrence unveiled yet another audacious scheme in 1952—this one for a neutron-producing cyclotron code-named J-16 and bearing an astounding price tag of $30 million—-Smyth was distinctly unmoved.

From "Big Science" by Michael Hiltzik

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training