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Verb, transitive.

To be amazed, awestruck or suprised into a lapse in action.

To stop what one is doing because of the shock of an event or action.
I was flabbergast at the previously posted example for flabbergast, which prompted my entry for the word.
by Nate January 22, 2004
56 9
to amaze, perplex
If if doesn't flabbergast the audience in the auditorium, the veterans probably won't care.
by The Return of Light Joker September 10, 2010
9 7
to cum
"oh dude i flabbergasted all over that girl's face last night"
by muncan February 18, 2010
20 20
the motion your ass cheeks make when you rip a huge one
Bob is flabbergasting he must have let one go.
by Geoff January 20, 2004
10 38