Slipped

He slipped the envelope from his grasp and it fell between the seats in the car.

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 quality of the hotel has slipped since the new management took over.

I slipped up and forgot to send the important email.

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

The airline's punctuality slipped due to bad weather.