fluency
Puedo hablar tres idiomas con bastante fluidez.
I can speak three languages quite fluently.
Habla japonés con una fluidez increíble a pesar de haberlo aprendido solo.
He speaks Japanese with incredible fluency despite having learned it on his own.
No sabía que Tom podía hablar francés con tanta fluidez.
I didn't know Tom could speak French so fluently.
Tom no habla francés con tanta fluidez como Mary.
Tom doesn't speak French as fluently as Mary does.
Ojalá pudiera hablar francés con mayor fluidez.
I wish I could speak French more fluently.