able to speak, write, read, etc without difficulty
Many children rapidly become fluent readers
She's fluent in Welsh
said of somebody's command of a language: effortless and competent
They speak fluent Italian
effortlessly smooth and rapid; polished
a fluent performance
flowing or capable of flowing; = fluid2 (1)
fluency /-si/ noun
fluently adv
[Latin fluent-, fluens, present part. of fluere to flow]