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