The phrase "accidental one" is correct and usable in written English.
It can be used to refer to something that happened by chance or without intention, often in contexts discussing events or outcomes.
Example: "The error in the report was an accidental one, and we quickly corrected it."
Alternatives: "unintentional one" or "chance occurrence".
The Rev. Al Sharpton is not about to muse on whether Mr. Bush is a deliberate liar or only an accidental one, as he once did in a primary debate, when he speaks Wednesday night.
She's a positive fashion role model – and in many ways an accidental one".
The doctor has an open, humane face, one that befits an arts patron, even an accidental one.
It has also been said that his murder in 1833 (which the film has pulled up in the timeline so that it appears to happen very soon after the privy attack) was actually a suicide, albeit possibly an accidental one.
But this choppiness is accidental: one of the things this novel is doing is playing non-linear games with time, wrongfooting any preconceptions we have been foolish enough to build up from the first volumes.
There are pleasures in an evening that doesn't so much appear to have been directed as assembled, but they are largely accidental ones, and include a script and delivery that on occasion give rise to unintentional laughter.
John Man's quoted Gutenberg page sizes are in a proportion not very close to the golden ratio, but Rosarivo's or van de Graaf's construction is applied by Tschichold to make a pleasing text area on pages of arbitrary proportions, even such accidental ones.
Therefore, some of the biggest hits on YouTube are, and will continue to be, accidental one-hit wonders.
And early in the exhibition En No Gyoja, the legendary founder of a mountain-based asceticism combining aspects of Shinto and Buddhist beliefs known as Shugendo, moves through several mediums, including intentional hanging scrolls and what might be called accidental ones, those made from fragments excised from hand scrolls and mounted on textiles, as well as intact hand scrolls.
If it turns Alt-J into accidental one-hit wonders in the red states, then they're ready for it.
