Synonyms of 'unreadable'
1 turgidDictionary, heavy going, badly written
Most computer ads used to be unreadable.
dry as dust
2 illegibleDictionary, undecipherable, crabbed
Writing that is illegible is so unclear that you cannot read it.
She scribbled an unreadable address on the receipt.
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Thesaurus for unreadable from the Collins English Thesaurus
If you use unreadable to describe a book or other piece of writing , you are criticizing it because it is very boring , complicated , or difficult to understand .