The most common and most likely answer to this crossword clue is the 6 letter word CONVEY
I've seen this crossword clue in The Guardian
C
O
N
V
E
Y
Buddy explains!
The straight part
We know that "communicate" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case communicate = convey.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 CONVEY mean?
CONVEY verb- To move (something) from one place to another.
- To take or carry (someone) from one place to another.
- To communicate; to make known; to portray.
- To transfer legal rights (to).
- To manage with privacy; to carry out.
- To carry or take away secretly; to steal; to thieve.