Wiktionary
adv. by accident, unexpectedly, by chance; fortuitously, unintentionally.
Usage examples of "accidently".
Unlikely that Jimmy would accidently twist the ring, but Chase locked in the third twist because a three-motion seal was phat impossible to unlock by accident and because, by God, you did the job right or not at all.
That acquaintance, who was a shoemaker, had accidently heard that printers were wanted at No.
Columbia Presbyterian Medical Center towered above the highway on concrete buttresses, like a hydroelectric project accidently constructed in the wrong place, appallingly large.
October 4 a Tu-154 airliner with 78 Israeli citizens aboard was accidently shot down over the Black Sea by a Ukrainian S-200 missile.
How the cat in the experiment had vanished and the professors at his university had designed and constructed a spacetime machine using the anomalies in the universal continuum to get around Time's Arrow but then somebody had pushed the wrong button when Neils and himself had gone out down to the Mexican take-aways so that the entire faculty had disappeared into another universe and then the riot squad had arrived and interrogated himself and the rabbit and then made him go after the cat by himself and how had he arrived at Earth to capture the cat and take it back for trial on his planet but he had missed it when the man in the wardrobe wearing the lab coat and Stetson wouldn't talk to him so he accidently vaporized the kitchen and fallen through in the fish tank and gotten electrocuted while standing on the pot plant and decided in the end to open the beer with his hands and not his head.
Swinging around to watch, Lieutenant Koudelka accidently pressed the release of his swordstick, and the cover shot off into the bushes.