What is another word for mattiest?
Pronunciation: [mˈatɪəst] (IPA) 
"Mattiest" is derived from the word "matte" which means a dull and non-glossy surface or finish. Synonyms for "mattiest" include the words "dull," "flat," "lusterless," "unpolished," "non-reflective," and "matte." These words describe a surface or finish that lacks shine or glossiness. It is a popular term in the world of photography to describe a non-reflective photo paper or finish. "Matte" finishes are also commonly used in furniture and paint, giving a subtle yet natural appearance. In summary, "mattiest" is synonymous with words that describe a dull and non-shiny surface or finish.
