[ flab-er-gast ]
/ ˈflæb ərˌgæst /

verb (used with object)

to overcome with surprise and bewilderment; astound.

Words nearby flabbergast

Origin of flabbergast

1765–75; variant of flabagast (perhaps flabb(y) + aghast)

OTHER WORDS FROM flabbergast

flab·ber·gast·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for flabbergast

  • But there had been no need, and Stockdale was too shrewd a man to "barge in" and flabbergast his youthful Sub.

    A Sub and a Submarine|Percy F. Westerman
  • And nothing has happened to astound or flabbergast him, to send him sprawling with Cheyne-Stokes breathing.

    Europe After 8:15|H. L. Mencken, George Jean Nathan and Willard Huntington Wright

British Dictionary definitions for flabbergast

/ (ˈflæbəˌɡɑːst) /

verb (tr)

informal to overcome with astonishment; amaze utterly; astound

Word Origin for flabbergast

C18: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012