The phrase "accidentally meets" is correct and usable in written English.
You can use it to describe an unplanned or unexpected encounter between people.
Example: "While walking through the park, she accidentally meets her old friend from high school."
Alternatives: "unexpectedly encounters" or "stumbles upon."
How she accidentally meets Warren Scofield, who's instantly smitten, I will not divulge.
Valeria, married to Fenton Hardcastle for six months, accidentally meets his first wife, Lois, in the bank.
An insurance clerk, Ashley Veronica Sywakk), accidentally meets a Chinese women, Sunee (Amanda Ma), at the airport and is suckered into giving her a lift.
The New Yorker, February 29 , 1964P. 34 Valeria, married to Fenton Hardcastle for six months, accidentally meets his first wife, Lois, in the bank.
Leslie accidentally meets her prince, the basketball super-whiz Scott McKnight (the hip-hop star Common) at a gas station after a game in which he ostentatiously slam-dunks every shot.
The story of a single day in the life of Bakha, a toilet-cleaner, who accidentally meets a member of a higher caste, it was critically acclaimed worldwide, and won Anand the reputation of being India's Charles Dickens.
"But my own feeling tells me that they didn't just accidentally meet up," he said.
One day she accidentally met Peter Dobay & his wife as they got out of the train from Montreux.
Now, 20 years later, the two women accidentally meet again, reawakening their memories of a shared past.
"The twelve men congregated in the smoking room of the Crown Hotel gave the impression of a party accidentally met.
They even set procedures for making sure that engineers and buyers from different clients do not accidentally meet one another while having lunch at company cafeterias here.
