The word “flabbergasted” means to be greatly surprised or astonished. It is often used to describe a state of shock or disbelief.
Interesting fact: The origin of the word “flabbergasted” is uncertain, but it is believed to have emerged in the early 19th century. It is thought to be a combination of the words “flabby” (meaning weak or soft) and “aghast” (meaning filled with horror or shock).