Is “Fluency” a Scrabble word?
Yes
FLUENCY
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Fluency
/ˈfluːənsi/
noun
1.The quality of smoothness of flow.
2.The quality of being fluent in a language; A person's command of a particular language.
3.The quality of consistently applying skill correctly in the manner of one well-practiced at it, requiring little deliberate thought to perform without mistakes