The most common and most likely answer to this crossword clue is the 8 letter word SHOCKING
I've seen this crossword clue in The Times
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More clues leading to the result SHOCKING
- Repulsive joint found in prison, half of it missing
- Outrageous form of execution?
- Spill the beans about German wine being terrible
- Awful wine tipped into grass
- Squeal about wine being execrable
- Stunning wine put into wrong glass at first
- It's scandalous to see Carol drinking wine
- Appalling treatment in resuscitation room?
Buddy explains!

The straight part
We know that "Outrageous/form of execution?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case outrageous/form of execution? = shocking.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 SHOCKING mean?
SHOCKING verb- To cause to be emotionally shocked, to cause (someone) to feel surprised and upset.
- To give an electric shock to.
- To meet with a shock; to collide in a violent encounter.
- To collect, or make up, into a shock or shocks; to stook.
- The application of an electric shock.
- Inspiring shock; startling.
- Unusually obscene or lewd.
- Extremely bad.