Extremely excited;overly joyed. To have never ending happiness.
"That cheerleader over there is flabbergastic!"
"I know, she's the girl who never stops clapping!"
by Maggie SE May 13, 2007
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FLABBERGASTED is defined as when your heart jumps with surprise at an amazingly unique difference in your life; often a change or surprise!
I was FLABBERGASTED when I got a letter from Harvard University saying that I'm in!
by Queen/Cupcakes/Sister February 21, 2017
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To be greatly confused, surprised, or astonished. Or even a mix of all.
When I told Andy The Nerd that I got a higher test grade than him, he was FLABBERGASTED!
by pull up in a ford focus April 5, 2022
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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
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oh my gosh, i can't believe it!....
Don't bother me right now, I'm in the middle of flabbergastation.
by AppleJuice May 3, 2008
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