Part of speech:
Not legible or decipherable.
Impossible to penetrate or enter:
Indistinctly heard; faint.
Not clear in meaning or expression; inexplicit.
Unsuitable for or not worth reading:
Find another word for undecipherable. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for undecipherable, like: illegible, indistinct, impenetrable, obscure, vague, indecipherable, unclear and unreadable.