D defs.my
Entry 1 sense Webster, 1913

Flabbergast

/(flăb"bẽr*găst)/ · Flab·ber·gast · IPA /ˈflæbɚˌɡæst/
01 v. t. To astonish; to strike with wonder, esp. by extraordinary statements.
  1. 1.
    To astonish; to strike with wonder, esp. by extraordinary statements.[Jocular]