Un-decipherable

Un-decipherable describes something that is impossible or extremely difficult to understand, interpret, or decode. This can apply to written text, a set of instructions, a complex system, or even a person's behavior. The root word 'decipher' implies breaking a code or solving a puzzle to find meaning, and the prefix 'un-' negates this ability. When something is un-decipherable, it's essentially hidden or inaccessible to comprehension, remaining obscure, opaque, or inscrutable no matter how diligently one tries to glean meaning.

Un-decipherable meaning with examples

• The ancient scrolls contained an un-decipherable script, frustrating historians who desperately wanted to uncover the civilization's secrets. Years of study yielded only frustration. Even with advanced imaging technology, the symbols remained resistant to any translation, and this left everyone in despair. Further excavation brought more scripts to the table.
• The instructions for assembling the flat-pack furniture were utterly un-decipherable; diagrams were cryptic, and the numbered steps made no logical sense. I had to throw away my furniture kit because no one understood the words written in any language. Attempts to build the furniture resulted in a chaotic mess, I really hope I get a refund!
• Her sudden change in mood was un-decipherable to her friends; one moment she was laughing, and the next she was withdrawn and silent. Her unpredictable shifts in emotions, which her friends were unaware of, left them feeling confused and helpless. They couldn't fathom the reasons for her erratic behavior, as the emotions kept switching.
• The complex encryption code protecting the classified documents proved to be un-decipherable to even the world's most advanced cyber security experts. All attempts to breach the system have failed. This made them impossible to access, protecting the sensitive data and giving everyone a sigh of relief, as all data was saved.