The most common and most likely answer to this crossword clue is the 7 letter word DERAILS
D
E
R
A
I
L
S
Buddy explains!
The straight part
We know that "comes off the track" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case comes off the track = derails.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 DERAILS mean?
DERAILS verb- To cause to come off the tracks.
- To come off the tracks.
- To deviate from the previous course or direction.
- To cause to deviate from a set course or direction; derange.