The most common and most likely answer to this crossword clue is the 6 letter word NUKING
I've seen this crossword clue in Financial Times
N
U
K
I
N
G
More clues leading to the result NUKING
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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 NUKING mean?
NUKING verb- To use a nuclear weapon on a target.
- To destroy or erase completely.
- (by extension) To carry out a denial-of-service attack against (an IRC user).
- To expose to some form of radiation.
- To cook in a microwave oven.
- To over-analyze or overly despair over something.