Slipped

The book slipped from his lap and onto the floor.

He slipped on the wet steps and tumbled down the stairs.

She slipped on the rug and nearly fell down the stairs.

He slipped and used a curse word in front of his grandmother.

She slipped on the wet spot in the kitchen and dropped the dishes she was carrying.

The building's safety standards have slipped over the years due to lack of maintenance.

The water level slipped as the drought continued.

I slipped up and forgot to send the important email.