The most common and most likely answer to this crossword clue is the 10 letter word DERAILMENT
D
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M
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More clues leading to the result DERAILMENT
- The German complaint following off-line event maybe?
- Evidently embarrassed over complaint for going off track
- Trend involved with email being taken off line
- Tracks ignored in Derry, poor condition causing this?
- Accident producing return of scarlet fever?
- Journalist upset over criminal trial about soldiers leaving tracks
- Complaint after traffic light’s turned around, producing accident
- Train disaster evokes the German complaint
- Held up by illness, soliders died climbing in training accident
Buddy explains!

The straight part
We know that "Train disaster" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case train disaster = derailment.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 DERAILMENT mean?
DERAILMENT noun- The action of a locomotive or train leaving the rails along which it runs.
- A pattern of discourse (in speech or writing) that is a sequence of unrelated or only remotely related ideas.
- An instance of diverting a conversation or debate from its original topic.