How to pronounce flabbergasted:
Example: "A circle of policemen stood dumbfounded by her denial of having seen the accident"
To overwhelm with bewilderment; to amaze, confound, or stun, especially in a ludicrous manner.
Example: "He was flabbergasted to find that his work had been done for him before he began."
Appalled, annoyed, exhausted or disgusted.
Example: "He was flabbergasted at how much weight he had gained."
Damned.