Slipped

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

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 key into the lock and turned it quietly.

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

He slipped a piece of paper into the envelope and sealed it shut.

The book slipped from her hands and fell to the ground.

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