What's the plural form of mispunctuation? Here's the word you're looking for.
Answer
The noun mispunctuation can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be mispunctuation.
However, in more specific contexts, the plural form can also be mispunctuations e.g. in reference to various types of mispunctuations
or a collection of mispunctuations.