If something astounds you, you are very surprised by it.

What does it mean to be astound?

: overwhelmed with astonishment or amazement : astounded. Synonyms Choose the Right Synonym More Example Sentences Learn More About astound.

What is the synonym of astound?

Some common synonyms of astound are amaze, astonish, flabbergast, and surprise. While all these words mean "to impress forcibly through unexpectedness," astound stresses the shock of astonishment.