Flabbergast
Definition 1 of 1

Formal
Use in formal contexts to express surprise

The unexpected news left them in a state of flabbergast.
Contextual Use
Use to describe emotional responses

His actions flabbergasted his closest friends.
Colloquial
Commonly used in everyday language

She flabbergasted me with her sudden change of plans.
Compare with
astonishamazeastounddumbfoundshock
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