- The definition of astonishment refers to feeling dazzled or overwhelmed by something.
Learning you had just won 10 million dollars would be a shocking surprise and an example of being filled with astonishment.
- the state of being astonished; great amazement
- anything that astonishes
- Great surprise or amazement.
- A cause of amazement; a marvel.
(countable and uncountable, plural astonishments)
From astonish + -ment.