1. undeciphered - Adjective
2. undeciphered - Verb
not deciphered
Source: WordNetChaos is order yet undeciphered. José Saramago
Linear A is still undeciphered Source: Internet
During the interview period following the lecture, Ventris immediately confirmed that Linear B was as yet undeciphered, and determined to decipher it. Source: Internet
He encouraged the use of the Linear Elamite script, that remains undeciphered. Source: Internet