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