slip

To move smoothly, quickly, or quietly, often unnoticed.

"He managed to slip out of the room."

To accidentally lose one's footing or balance, often resulting in a fall.

"Be careful not to slip on the wet pavement."

A small, narrow piece of paper, often for writing or a record.

"Please fill in the deposit slip."

A minor or careless mistake, especially in speech or action.

"It was just a slip of the tongue."