Jaw-Dropping in a Sentence 

Definition of Jaw-Dropping  

awe-inspiring or unbelievable

Examples of Jaw-Dropping in a sentence

The sheer size of the Grand Canyon when I first laid eyes upon it was jaw-dropping and almost unreal.  
I think my favorite jaw-dropping fact is how many Earths can fit in our Sun, and how many of our Sun can fit into even bigger stars like Betelgeuse.  
Seeing the usually meek and shy Jean stand up to his bully of a teacher was outright jaw-dropping.  

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