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 the ring from his finger and into the box.

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

The water level slipped as the drought continued.

The secret slipped out during the conversation, revealing the truth.

His physical condition slipped after he stopped exercising.