make (someone's) jaw drop(redirected from make his jaw drop)
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make (someone's) jaw drop
To cause someone to pause in astonishment, awe, or disbelief, especially with their mouth left open. Did you see Kathy's new dress? It's so gorgeous it made my jaw drop! That play was so amazing that it made all of our jaws drop! It made my husband's jaw drop to hear that I was leaving him.