expression, noun-modifying (irregular)
jaw-dropping; shocking; surprising
Used when something is so surprising or shocking that one's mouth stays open in astonishment. Often modifies nouns like 話, ニュース, or 結果.
See also: 開いた口が塞がらぬ
His sudden resignation was jaw-dropping news.
あいた口も塞がらぬほど驚いた。
I was so shocked that my mouth hung open.
Standard kanji spelling for this set phrase.
Mixed kana-kanji spelling; the first part is often written in kana.
A set phrase literally meaning 'even an open mouth won't close,' used to express extreme surprise or shock.