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