DictionaryastonishGreat surprise
verb

astonish

uh-STAHN-ish/əˈstɑːnɪʃ/

To surprise someone greatly.

The enormous bouquet astonishes the woman's friend as the cloth lifts away.

A woman lifts a cloth from a tiny table to reveal an unexpectedly enormous bouquet; her adult friend recoils slightly with eyes wide and hand over open mouth, visibly greatly surprised.
Etymology

The “out” and “thunder” elements evoke leaving someone thunderstruck. The earlier meaning “stun or strike senseless” shifted to overwhelming someone with surprise or wonder.

In context

Enhanced Public Domain426:22
and shallow spirits who inconsiderately assume the task of writing history thus the secret Springs of events remain hidden from us the fall of Empires and the transmission of dominions astonish us
1900s Satire Audiobook: Anatole France - Penguin Island

More examples

  • Her sudden resignation astonished the committee.
  • It still astonishes me how quickly the garden grows.
  • The magician keeps astonishing audiences with a simple deck of cards.

Forms

astonish · astonishes · astonished · astonishing

astonishment noun — A feeling of very great surprise.

Similar words

surprise
Can describe a much milder reaction to the unexpected.
amaze
Similarly suggests strong wonder, often at an impressive achievement.