The most common and most likely answer to this crossword clue is the 7 letter word ORALIST
I've seen this crossword clue in The Times
O
R
A
L
I
S
T
More clues leading to the result ORALIST
Buddy explains!

The straight part
We know that "Skilled communicator" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case skilled communicator = oralist.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 ORALIST mean?
ORALIST noun- A supporter of oralism.