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