Slipped

The pencil slipped from the desk 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 on the oil spill in the garage and got his hands dirty.

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

The water level slipped as the drought continued.

His physical condition slipped after he stopped exercising.