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腰を抜かす

こしをぬかすkoshionukasu

expression · godan verb

  1. to dislocate one's back
  2. to be unable to stand up due to fear or surprise

Kanji in this word

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Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences