What's the plural form of superflu? Here's the word you're looking for.
Answer
The noun superflu can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be superflu.
However, in more specific contexts, the plural form can also be superflus e.g. in reference to various types of superflus
or a collection of superflus.
Examples
In the wake of the superflus and cataclysmic events, male writers tend to jump to that unholy trinity of rape, murder and cannibalism.
