flabbergast Hear it!

flabbergast definition

flab·ber·gast (flab′ər gast′)

transitive verb

to make speechless with amazement; astonish

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

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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