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