What's the plural form of expertness? Here's the word you're looking for.
Answer
The noun expertness can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be expertness.
However, in more specific contexts, the plural form can also be expertnesses e.g. in reference to various types of expertnesses
or a collection of expertnesses.
He admired the expertness of these artists so much, that he copied many of their paintings in order to learn as much as possible about the way these artists worked.
Passionate about real estate, I now use this expertness to my clients best interest. I provide them with conclusive market analysis.
The expertness of the work may be attributed to Jenson's training as a medalist before becoming a printer.
Cetim's sustainability and expertness constitute considerable assets for the mechanical engineering companies.
Be it knowledge or skills, the general counseling training and experience of the addictions counselor constitutes another source of expertness.
Civil-political rights and economic-social rights demand very different kinds of expertness and methodologies for research and missions and lobbying.