Last Updated：2025/11/20

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(law enforcement, slang) A criminal investigation that has not been solved after a considerable time but remains “on the books” and may be reopened when new evidence appears.

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cold case

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Source Word

cold case

Noun

slang

(law enforcement, slang) A criminal investigation that has not been solved after a considerable time but remains “on the books” and may be reopened when new evidence appears.

Japanese Meaning

未解決事件。長期間解決に至っておらず、事件記録として残され、新たな証拠が出れば再捜査される刑事事件。

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The detective reopened the decades-old cold case after a DNA match finally surfaced.

Google Translation / DeepL Translation

刑事は、ついにDNAの一致が判明したことで、数十年前の未解決事件を再捜査した。

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Sense（1）

(law enforcement, slang) A criminal investigation that has not been solved after a considerable time but remains “on the books” and may be reopened when new evidence appears.

‘I had my researchers check the files on all the mispers and cold cases five years either side of that date estimate, on females of that approximate age. This is what they found. Fill your boots.’ He took a large gulp of his drink. / ‘I’m impressed, you've been moving fast.’ / ‘On it like a car bonnet, mate.’

Google Translation / DeepL Translation