Slipped

The pencil slipped from the desk onto the floor.

The spy slipped the secret code into the message, without anyone realizing it.

She slipped out of her dress and into a swimsuit.

The secret plan was slipped into a confidential memo, without anyone noticing.

The bird slipped out of its cage and flew away.

The crowd's noise slipped to a murmur as the speaker took the stage.

He slipped out of his wet clothes and into a dry towel after a refreshing swim.

The mouse slipped through the small crack in the wall.

The spy slipped past the guard and entered the building undetected.