Slipped

He slipped the pen off the desk and into his pocket.

The sun slipped below the horizon, leaving a colorful sky behind.

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

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

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

She slipped and made an error in her calculations, resulting in an incorrect answer.

He slipped his backpack off his shoulder and onto the ground.