Simple Definition of flabbergast
: to shock or surprise (someone) very much
Examples of flabbergast in a sentence
It flabbergasts me to see how many people still support them.
<your decision to suddenly quit your job flabbergasts me>
Origin and Etymology of flabbergast
First Known Use: 1772
Synonym Discussion of flabbergast
FLABBERGAST Defined for Kids
Seen and Heard
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