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1.
(adjective)
a relative measure of a person's ability to use and understand a language: usually suggests an evolved mastery of not only what a word means, but also the connotations that are related to it
On a particularly balmy day in Moscow, I exclaimed, "ya tyoply," or "I'm hot." If I were fluent in Russian, I would have known that "ya tyoply" suggests that "I am horny," and that "mne teplo," or literally "it is hot to me," is more appropriate.
by Randy and Nick May 07, 2007
 
2.
a term used to describe a man whom gets all the ladies.
My friend Alan is not ''Fluent''
by fucktyler November 03, 2013
 
3.
A word used for emphasis. Makes you sound kinda "cheerleaderish" when you use it.
"that minger is fluent ew"

"that guy is a fluent hottie."
by thunderpossum February 03, 2010