The most common and most likely answer to this crossword clue is the 7 letter word FLUENCY
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FLUENCY mean?
FLUENCY noun- The quality of smoothness of flow.
- The quality of being fluent in a language; A person's command of a particular language.
- The quality of consistently applying skill correctly in the manner of one well-practiced at it, requiring little deliberate thought to perform without mistakes