flabbergast

To flabbergast is defined as to cause great surprise or amazement.

(verb)

When you make a very surprising announcement that leaves all others stunned, this is an example of a situation where you flabbergast the listeners.

See flabbergast in Webster's New World College Dictionary

transitive verb

to make speechless with amazement; astonish

Origin: 18th-c. slang < ? flabby + aghast

See flabbergast in American Heritage Dictionary 4

transitive verb flab·ber·gast·ed, flab·ber·gast·ing, flab·ber·gasts

To cause to be overcome with astonishment; astound. See Synonyms at surprise.

Origin:

Origin: Origin unknown

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