That can be deciphered, understood or comprehended.(adjective)
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Use "decipherable" in a sentence
"The idea that s. 8 protects an individuals’s privacy in garbage until the last unpaid bill rots into dust, or the incriminating letters turn into muck and are no longer decipherable, is to my mind too extravagant to contemplate."
""Hef you any aguaintunce off Mitster Fear?" he inquired, in return, with no expression decipherable either upon his Gargantuan face or in his heavily enfolded eyes."
"` ` Hef you any aguaintunce off Mitster Fear? '' he inquired, in return, with no expression decipherable either upon his Gargantuan face or in his heavily enfolded eyes."