How to exclude capitalized words from spell checking in Vim?

Question

There are too many acronyms and proper nouns to add to the dictionary. I would like any words that contains a capital letter to be excluded from spell checking. Words are delimited by either a whilespace or special characters (i.e., non-alphabetic characters). Is this possible?

The first part of the answer fails when the lowercase and special characters surround the capitalized word:

,jQuery,
, iPad,
/demoMRdogood/
[CSS](css)
`appendTo()`,

The current answer gives false positives (excludes from the spellcheck) when the lowercase words are delimited by a special character. Here are the examples:

(async)
leetcode, eulerproject, 

The bounty is for the person who fixes this problem.

Answer 1

You can try this command:

:syn match myExCapitalWords +\<[A-Z]\w*\>+ contains=@NoSpell

The above command instructs Vim to handle every pattern described by \<[A-Z]\w*\> as part of the @NoSpell cluster. Items of the @NoSpell cluster aren’t spell checked.

If you further want to exclude all words from spell checking that contain at least one non-alphabetic character you can invoke the following command:

:syn match myExNonWords +\<\p*[^A-Za-z \t]\p*\>+ contains=@NoSpell

Type :h spell-syntax for more information.