Synonyms of the word

undecipherable

• adj. Not easily deciphered; difficult to read.

illegible

• adj. Not clear enough to be read; unreadable; not legible or decipherable.

indecipherable

• adj. Not decipherable; impossible to decode, read, understand or comprehend.

unclear

• adj. Ambiguous; liable to more than one interpretation.
• adj. Not clearly or explicitly defined.
• adj. Not easy to see or read; indecipherable or unreadable.
• adj. Not having a clear idea; uncertain.

unreadable

• adj. That cannot be read or is not easy to read.
• adj. Not sufficiently interesting to be worth reading.