Slipped

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

The pencil slipped from the desk onto the floor.

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

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

The prisoner slipped through the window and escaped from the high-security prison.

She slipped up and revealed the surprise party to the birthday boy.

The suspect slipped away from the police, disappearing into the crowd.

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

The criminal slipped out of the handcuffs and escaped from custody.

The city's crime rate slipped after the police department underwent budget cuts.