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one's jaw drop (open)
01
used when something, such as unexpected news, causes one to be greatly confused or shocked
![{one's} jaw [drop] (open|) definition and meaning](https://cdn.langeek.co/photo/45208/original/?type=jpeg "{one's} jaw [drop] (open|) definition and meaning")
What is the origin of the idiom "one's jaw drops" and when to use it?
The idiom "one's jaw drops" originates from the physical reaction of a person's jaw literally dropping when they are astonished or surprised. This expression is used to describe a state of shock, disbelief, or amazement. This expression is commonly used in everyday conversation to emphasize the magnitude of one's surprise.
Example
My jaw dropped open when she told me how old she was.
When he told me he had won the lottery, my jaw dropped open in disbelief.
Then Margaret tells her that they're going to be high heels and her jaw drops.
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