If the child had accidentally let something slip, it would be another case entirely.

Janelle, confused by this, accidentally let go of her key.

What happens if you accidentally let your camera get hot and sweaty?

He accidentally let go of Molly and she slipped to the floor, then was unable to get up.

Finally, a neighbor accidentally let the bad news slip.

You never who or what you'll accidentally let slip in.

Better to wait until she accidentally let the truth slip out.

While accusing me, she accidentally let the truth of what had happened slip out.

"We could accidentally let 0 back into the galaxy."

A few weeks ago, a company representative accidentally let slip that this meant a launch some time in October.