unreadable
adjective
[ ʌnˈriːdəb(ə)l ]
• not clear enough to read; illegible.
• "unreadable handwriting"
Similar:
illegible,
hard to read,
indecipherable,
unintelligible,
faint,
faded,
pale,
indistinct,
obscure,
scrawled,
scribbled,
hieroglyphic,
squiggly,
crabbed,
clear as mud,
• (of data or a storage medium or device) not capable of being processed or interpreted by a computer or other electronic device.