- The definition of astound is to shock, surprise or amaze.
If you tell someone something that is totally amazing or confusing, this is an example of astound.
Origin: ; from Middle English astouned, astoned, past participle of astonien, astonish
Used by arrangement with John Wiley & Sons, Inc.
transitive verb a·stound·ed, a·stound·ing, a·stounds
Origin: From Middle English astoned, past participle of astonen, to amaze; see astonish.
- a·stoundˈing·ly adverb