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