The most common and most likely answer to this crossword clue is the 10 letter word ACCIDENTAL
I've seen this crossword clue in Financial Times
A
C
C
I
D
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A
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More clues leading to the result ACCIDENTAL
- Sharp chance?
- Casual / character on staff, not sharp!
- For example, sharp header from Aberdeen, and Celtic beaten
- Random: a western where burro’s tail removed
- Maybe flat road north is blocked by hundreds of teeth
- Unintended mark added to note
- In a manner of speaking, I had a large flat?
- Unexpected eruption at Iceland obscures heart of glacier
- Fortuitous bit of scoring?
- Unwitting detectives interrupt a copper facing gangster
Buddy explains!
The straight part
We know that "Unintended/mark added to note" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unintended/mark added to note = accidental.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 ACCIDENTAL mean?
ACCIDENTAL noun- A property which is not essential; a nonessential; anything happening accidentally.
- Those fortuitous effects produced by luminous rays falling on certain objects so that some parts stand forth in abnormal brightness and other parts are cast into a deep shadow.
- A sharp, flat, or natural, occurring not at the commencement of a piece of music as the signature, but before a particular note.
- Part of a text that has a mainly structural purpose, such as spelling, punctuation or capitalization.
- Not essential; incidental, secondary.
- Nonessential to something's inherent nature (especially in Aristotelian thought).
- Adjusted by one or two semitones, in temporary departure from the key signature.
- Occurring sometimes, by chance; occasional.
- Happening by chance, or unexpectedly; taking place not according to the usual course of things; by accident, unintentional.
- Being a double point with two distinct tangent planes in 4-dimensional projective space.