Undecipherable

The technical manual was filled with undecipherable jargon.

The road signs in the foreign country were undecipherable, causing confusion among tourists.

The ancient hieroglyphics on the wall were undecipherable to the archaeologists.

The encryption code used by the spy was undecipherable to anyone without the decryption key.

The jumbled audio recording was undecipherable due to the poor quality.

The hieroglyphics on the temple walls were undecipherable without a translator.

The secret message was written in an undecipherable code.

The jargon-filled legal document was undecipherable for the average person.

The ancient manuscript's language was undecipherable to modern linguists.