It could be accidental.
⇑ Translate the sentence above by Google ⇑
Related: accidental
Prev: In fact, their meeting was not accidental.
Next: Often the pairings of books and settings have been purely accidental: "Moby Dick" on a three-day cross-country train trip; "The Magic Mountain" in a New England beachside cottage with no locks on the doors, no telephones or televisions in the rooms, and little to do beyond row on the salt pond ．
