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Example
夜の山道で熊の足跡を見つけて、彼は胆戦心驚の思いで小屋まで戻った。
On a mountain path at night, he found bear tracks and returned to the hut trembling with fear.
Usage Notes
This is a formal four-character idiom for intense fear. It is stronger and more literary than simply saying someone was scared.
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