The most common and most likely answer to this crossword clue is the 13 letter word WELL-MANNERED
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More clues leading to the result WELL-MANNERED
Buddy explains!
The straight part
We know that "Polite" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case polite = well-mannered.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 WELL-MANNERED mean?
WELL-MANNERED adjective- Having good manners; polite, courteous and socially correct; conforming to standards of good behaviour.