He left just enough space between them so they wouldn't accidentally bump.

I mean, that he just happened to bump into me accidentally.

While in the kitchen a moment ago I accidentally bumped into it.

I had to be careful most of all not to bump accidentally into another person.

I accidentally bumped into the fire coral my first day here.

She accidentally bumped some man's cue just as he was about to take a shot.

He goes shopping often and might accidentally bump into the main character at the mall.

Along the way, she accidentally bumped into a young woman headed in the opposite direction.

Certainly these two concerts bumped into each other accidentally, but they are more typical than not.

Wallace said he had accidentally bumped into his coach, who told him to put the shirt back on.