Her family lived outside the city 'proper'. [=lived in an area that was close to the city but was not actually in the city]
Please put your shoes in their 'proper' place. [=please put your shoes where they belong]
The children must learn how to behave 'properly' [='appropriately'] in church.
(..) They key's run off. I helped build these cells. These are half-pin barrel hinges. With the right leverage and the proper application of strength. The door will lift free. What's your name? Will Turner. That would be short for William, I imagine. (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl
(..) Will. It's so good to see you. I had a dream about you last night. About me? Yes, is that entirely proper for you-- About the day we met. Do you remember? How could I forget, Miss Swann? How many times must I ask you (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl