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