unreadable

adjective3

1. •
   Not written clearly enough to be deciphered.

   • unreadable charts
   • a machine that cut up secret documents into small unreadable fragments
2. •
   Not able to be accessed or played by some technical device.

   • The scratched CD is unreadable.
3. •
   Making an unpleasant reading experience, e.g. because it is dull or upsetting.

   • an unreadable book
   • unreadable rants