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slack-jawed

[ slak-jawd ]
/ ˈslækˈdʒɔd /
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adjective
having the mouth open, especially as an indication of astonishment, bewilderment, etc.
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Origin of slack-jawed

slack jaw + -ed3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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