The most common and most likely answer to this crossword clue is the 9 letter word DAREDEVIL
I've seen this crossword clue in The Guardian
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More clues leading to the result DAREDEVIL
- Stupidly derailed Victor, a reckless type
- Reckless lawyer getting terribly reviled
- Pilot of the future lived in retirement as a human cannonball
- Challenged wicked superhero
- Read about fiend or risk-taker
- Revile dad horribly, being a reckless type
- Thrill-seeker has lawyer embarrassed by depravity
- Stunt man died? That’s a ruddy disaster!
- Challenged wicked adventurer
- Adventurous sort was about to drink American wine
Buddy explains!

The straight part
We know that "risk-taker" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case risk-taker = daredevil.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 DAREDEVIL mean?
DAREDEVIL noun- A person who engages in very risky behavior, especially one who is motivated by a craving for excitement or attention.
- To behave in a reckless, adventurous, or physically risky manner
- Recklessly bold; adventurous.