Slipped

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

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

The sound slipped away as she closed the door quietly.

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

She slipped her feet into the high-heeled shoes, feeling confident and elegant.

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