Flowing or capable of flowing; liquid; glodding; easily moving.
Ready in the use of words; voluble; copious; having words at command; and uttering them with facility and smoothness; as, a fluent speaker; hence, flowing; voluble; smooth; -- said of language; as, fluent speech.
A current of water; a stream.
A variable quantity, considered as increasing or diminishing; -- called, in the modern calculus, the function or integral.
The mare set off for home with the speed of a swallow, and going as smoothly and silently. I never had dreamed of such a motion, fluent and graceful, and ambient, soft as the breeze flitting over the flowers, but swift as the summer lightening. Richard Blackmore
I might be more fluent in Swedish than I am in Spanish. My wife speaks it to our kids, and they're fluent so I hear it all the time, so I've got that under my belt. Will Ferrell
Although I'm not fluent in sign language by a long way, I could have a fairly decent conversation. Paul Theroux