The most common and most likely answer to this crossword clue is the 8 letter word IGNITING
I've seen this crossword clue in The Daily Telegraph
I
G
N
I
T
I
N
G
More clues leading to the result IGNITING
Buddy explains!
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 IGNITING mean?
IGNITING verb- To set fire to (something), to light (something)
- To spark off (something), to trigger
- To commence burning.
- To subject to the action of intense heat; to heat strongly; often said of incombustible or infusible substances.