#80 - "Gravity's Rainbow" by Thomas Pynchon

From dictionary.com:

unreadable

[uhn-ree-duh-buh l] 

 

• Examples
• Word Origin

adjective

1.

not readable; undecipherable; scribbled:

His scrawl was almost unreadable.

2.

not interesting to read; dull; tedious; an unreadable treatise.

3.

extraordinarily difficult to read or comprehend; obscure;incomprehensible:

an unreadable dream; an unreadable expression.

Time's Richard Lacayo starts off his summary on why this one is on the list with "no, it is not unreadable." He then describes the plot as "unsummarizable," which as far as I know isn't a word.