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