jaw-droppingly
adverb/ˈdʒɔː drɒpɪŋli/
/ˈdʒɔː drɑːpɪŋli/
(informal)- in a way that is so large or good that it surprises you very much
- jaw-droppingly beautiful
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jaw-droppingly
Definition of jaw-droppingly adverb from the Oxford Advanced Learner's Dictionary