The most common and most likely answer to this crossword clue is the 6 letter word RISKED
I've seen this crossword clue in The Times
R
I
S
K
E
D
More clues leading to the result RISKED
Buddy explains!
The straight part
We know that "imperilled" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case imperilled = risked.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 RISKED mean?
RISKED verb- To incur risk of (something).
- To incur risk of harming or jeopardizing.
- To incur risk as a result of (doing something).