• synonyms


verb (used with object)
  1. to overcome with surprise and bewilderment; astound.
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Origin of flabbergast

1765–75; variant of flabagast (perhaps flabb(y) + aghast)
Related formsflab·ber·gast·er, noun

Synonyms for flabbergast

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for flabbergasting

dumbfound, nonplus, disconcert, astound, amaze, astonish, daze, stun, overwhelm, shock, abash, confound, stagger, throw, overcome

Examples from the Web for flabbergasting

Historical Examples of flabbergasting

  • The trick lies in the tone-color—in the flabbergasting magic of the orchestration.


    Henry Louis Mencken

  • It's a flabbergasting coincidence, would make a cynic swear; but by Jove you've been reserved for good luck in the end.'

    Mrs. Severn, Vol. 1 (of 3)

    Mary Elizabeth Carter

British Dictionary definitions for flabbergasting


verb (tr)
  1. informal to overcome with astonishment; amaze utterly; astound
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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