undeciphered
/ˌʌndɪˈsaɪfərd/
adjective
- Not having been read, interpreted, or understood, especially of a code, writing, or language.
- The undeciphered script from the ancient civilization remains a mystery to linguists.
- The scientist spent years trying to understand the undeciphered symbols on the tablet.
- Many undeciphered messages from the war are still stored in archives.
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