Fluent
WordNet
adjective
(1) Expressing yourself readily, clearly, effectively
"Able to dazzle with his facile tongue"
"Silver speech"
(2) Smooth and unconstrained in movement
"A long, smooth stride"
"The fluid motion of a cat"
"The liquid grace of a ballerina"
WiktionaryText
Adjective
- Able to speak a language accurately and confidently.