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