What's the plural form of cuckoldom? Here's the word you're looking for.
Answer
The noun cuckoldom can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be cuckoldom.
However, in more specific contexts, the plural form can also be cuckoldoms e.g. in reference to various types of cuckoldoms
or a collection of cuckoldoms.
Examples
I know some who consentingly have acquired both profit and advancement from cuckoldom, of which the bare name only affrights so many people.