Cryptic crossword clue
Race riots? At heart, Joe is more cautious 6

The most common and most likely answer to this crossword clue is the 6 letter word CAGIER

I've seen this crossword clue in Financial Times
C
A
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Buddy explains!

The straight part
We know that "more cautious" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case more cautious = cagier.
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 CAGIER mean?

CAGIER adjective
  1. Wary, careful, shrewd.
  2. Uncommunicative; unwilling or hesitant to give information.

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