fluently
Definitions
In a manner that is able to express oneself easily and articulately.
In a smooth, graceful, or effortless way.
Examples
She speaks three languages fluently.
After living in Paris for a year, he began to communicate fluently in French.
The software allows users to navigate the interface fluently without any lag.
Synonyms
effortlessly smoothly eloquently articulately fluidly naturally readily
Antonyms
haltingly stutteringly awkwardly hesitantly laboriously stiffly clumsily