General:
* Hyper-fluent: Implies an extremely high level of fluency.
* Super-fluent: Similar to "hyper-fluent," emphasizing a high level of fluency.
* Ultra-fluent: Another option suggesting exceptional fluency.
Specific contexts:
* Bilingual fluent: For someone fluent in two languages.
* Multilingual fluent: For someone fluent in multiple languages.
* Native fluent: For someone who speaks a language fluently as their native tongue.
* Technically fluent: For someone who is fluent in a specific technical language or skill.
Other options:
* Highly fluent
* Proficiently fluent
* Effortlessly fluent
* Articulate (implies fluency in speech)
The best option depends on the specific meaning you want to convey.