What is another word for super-fluent?
Pronunciation: [sˈuːpəflˈuːənt] (IPA) 
When we talk about being super-fluent, we often mean being proficient in a language or subject. If you're looking for alternative words to describe this level of mastery, some synonyms to consider might include "expert," "flawless," "polished," "smoother," "accomplished," "adept" or "masterful." These all convey the idea of being highly skilled, knowledgeable and capable. Other related words that could be used to describe super-fluent might include "fluent," "artful," "proficient," "skillful," "capable," "talented" or "competent." Whatever term you choose, if you're super-fluent in a language or skill, you're clearly someone who's accomplished something remarkable.
