I like these books because they expand your vocabulary. My suggestion goes to, of course, Gene Wolfe.
ITT: Books that use fancy words
Clark Ashton Smtih
Beckett’s early stuff written in English has me reaching for a dictionary often. Murphy is fun.
lotsa will self
he's pretty much know for his sesquipedalianism
Coming from a non English speaking country, I have to agree with you, OP. I've read 'harder' books but I constantly had to stop my reading to learn a word or two with this book.
Virginia Woolf
Blood Meridian
>BoTNS
great first suggestion tbph. it's what i would have said
instead, i will say Moby Dick
>expanding your vocabulary with made up words
>Being such a word babby that you think any of those words are made up, with the exception of "naviscaput" which maybe he did make up after all
I nominate Austerlitz