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